巴西专利BR112014024252B1 DEVICE FOR THE PLACEMENT AND LEVELING OF TILES

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专利摘要:
tile alignment and leveling device. a tile leveling and aligning device to align and level tiles as they are being attached to a substrate. the device includes a flexible element, a base plate and an intermediate element. the intermediate element maintains the distance between the flexible element and the bottom plate at a predetermined vertical distance. the flexible element has a first end and a second end. the first end is hingedly combined as an intermediate element, thus allowing the flexible element to be hinged between a first position and a second position (facing down). in use and in its second position, the second end of the flexible element exerts a force against the top of the tiles to help align and level the tiles as they are being secured to the substrate.
公开号:BR112014024252B1
申请号:R112014024252-6
申请日:2013-03-29
公开日:2021-07-20
发明作者:Edward A. Kufner；Ralph Burgin
申请人:Davinci Italia/Usa Group, Llc；
IPC主号:

专利说明:

FUNDAMENTALS
[001] This application is based on U.S. Provisional Application Serial No. 61/617,487 filed March 29, 2012, the entire contents of which are incorporated herein by reference.
[002] The present invention is aimed at the field of laying and leveling tiles and slabs. More specifically, the present invention is directed to a device for aligning and leveling adjacent tiles as they are placed on floors, walls, bench tops and the like.
[003] Tiles have become a popular decorative and functional article for use on floors, walls, countertops and the like. Both professional tile installers and people installing themselves spend a lot of time aligning and leveling the tiles as they are laid on the substrate surface. Proper alignment and leveling of each tile is important for a number of reasons. One reason is that if a tile is improperly placed, the error will continue on the adjacent tiles, so the installation will be unacceptable and the tiles will have to be replaced and/or sanded and polished until the tiles are level or flat. In addition to the aesthetic reasons for proper tile placement, a level surface is essential on tiled floors so that people do not trip and fall on tiles placed outside the level. The unevenness between tiles occurs when the edge of a tile is above that of the adjacent tile to such an extent that it causes someone to trip. Replacing or otherwise correcting tile installation errors (such as uneven or incorrect tile alignment) takes time which increases the total cost of tile installation.
[004] The placement and leveling of tiles can be difficult as many substrates are not uniform, such as the soil when laying tiles in an outdoor patio. In this case, it may be difficult to elevate the low areas of the substrate with mortar or other objects so that all the tiles are level. Also, tiles can shift and sink into the mortar as the mortar dries. It has traditionally been necessary to continuously monitor newly laid tiles as the mortar dries to make sure the tiles remain level. Tile installers have used a variety of devices and methods to maintain the quality of the tile installation while completing the installation process as quickly as possible. A basic method uses markings on the substrate surface. Marking the installation surface requires the grout to be carefully applied in such a way that the marks remain visible. Although this technique helps to align the tiles, it does not keep the tiles level as they are placed in the mortar. Furthermore, the use of this marking technique increases the amount of time required for installation resulting in increased costs.
[005] Another device used for placing and leveling tiles is a frame designed to space the tiles a suitable distance. This type of frame is typically a fixed grid that is designed for a specific tile size. One problem with this device is that it has a fixed size that requires a professional installer to carry a multitude of frames to install different sizes of tile. Another disadvantage of this type of frame is that it is only able to install one type of tile at a time.
[006] Another device used to place and align adjacent tiles is a spacer such as that described in U.S. Patent No. 6,625,951 (McCarthy). These types of spacers typically provide a square edge for proper alignment of adjacent tiles at right angles, and height adjustment means for adjusting the height of the tiles relative to the grout surface. One problem with these types of devices is that it is difficult to fit a multiplicity of spacers to the same height, which results in an uneven tiled surface. A problem associated with these types of devices is that the adjustment means does not allow the height of the tiles to be adjusted after the tile has been placed, as the height adjustment means is located under the tile.
[007] Therefore, there is a need for an efficient and inexpensive leveling and alignment device that allows a vertical alignment of the tiles to each other after the tiles have been laid in the mortar. SUMMARY
[008] The present invention comprises a device for aligning and leveling tiles. The device can be used to align and level tiles that are being fixed to any suitable substrate, including floors, walls and bench tops. In some embodiments the device includes at least one flexible element and a bottom plate combined by an intermediate element. In other embodiments the device includes a bottom plate having a rod extending above it and an intermediate element combined with at least one flexible element, the intermediate element having an opening adapted to receive the rod. Flexible elements have a first end and a second end. The first end is hingedly combined with the intermediate element thus allowing the flexible elements to rotate between a first position (upwards) and a second position (downwards). In some embodiments the device includes means for securing the flexible elements in their second position.
[009] A typical first step in laying tiles is the application of a laying bed, such as a cement or mortar compound, to the substrate surface. The tiles can then be placed on the laying bed. During these steps, the bottom plate is positioned on the laying bed below the tiles, so that the intermediate element (or the rod in some embodiments) extends upwards between the adjacent tiles. The bottom plate is preferably positioned such that it is in contact with more than one tile. The flexible elements are in their first position as the tiles are being placed on the bottom plate. Then the flexible elements are moved to their second position where the second end of the flexible elements presses against the top of the tiles, causing the tops of the tiles to align with each other in the same plane with a minimum of unevenness, or even no unevenness. The device keeps the tiles level with the adjacent tiles, not the substrate surface.
[0010] After the laying bed dries, thus fixing the tiles to the substrate, the intermediate element (or the rod in some arrangements) is separated from the bottom plate leaving the bottom plate under the laid tiles. Those skilled in the art will note that multiple tile leveling devices can be used simultaneously between different tiles being laid on a substrate, to level many tiles simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 is a perspective view of an embodiment of the invention;
[0012] Figure 2 is a front view of an embodiment of the invention;
[0013] Figure 3 is a perspective view of an embodiment of the invention;
[0014] Figure 4 is a perspective view of an embodiment of the invention;
[0015] Figure 5 is a perspective view of an alternative embodiment of the invention having an additional fastening mechanism;
[0016] Figure 6 is a front view of the device being used with a tile;
[0017] Figure 7 is a side view of the device being used with two tiles;
[0018] Figure 8 is a front view of an alternative embodiment in which the fastening mechanism is a locking tongue system;
[0019] Figure 9 is a front view of the embodiment of Figure 8 showing the flexible elements in their locked position;
[0020] Figure 10 is a front view of an embodiment in which the bottom plate has flexible elements;
[0021] Figure 11 is a front view of an embodiment in which the flexible elements have a curvature that allows greater flexibility to accept different thicknesses of tiles;
[0022] Figure 12 is a perspective view showing a modality that has an opening in the flexible elements;
[0023] Figure 13 is a front view of the embodiment of Figure 11 in which one of the flexible elements is in its second position;
[0024] Figure 14 is a perspective view of a mode in which the intermediate element slides along a rod; and
[0025] Figure 15 is a front view of an embodiment shown in Figure 14 where the device is being used with a tile. DETAILED DESCRIPTION
[0026] The invention comprises a device for aligning and leveling tiles. The device can be used to align and level tiles that are being fixed to any suitable substrate, including floors, walls and bench tops. The device includes at least one flexible element 10 and a bottom plate 12. In the embodiment shown in Figures 1-13, the flexible elements 10 and bottom plate 12 are combined by an intermediate element 18 which holds the flexible elements 10 and the plate. 12 at a predetermined vertical distance. The flexible elements 10 have a first end 10a, a second end 10b and a fastening mechanism. The first end 10a is hingedly combined with the intermediate element 18 thus allowing the flexible elements 10 to rotate between a first position where the flexible elements 10 are loose and allowed to rotate freely and a second position where the flexible elements 10 are locked in their down/engaged position.
[0027] The clamping mechanism is used to secure the flexible elements 10 in their second position. In the embodiments shown in Figures 1-6, the securing mechanism is a protruding fastener 14 received by an aperture 16. In the embodiments shown in Figures 1-6, the protruding fastening element 14 is combined with the flexible element 10 and the opening 16 is an intermediate element 18. It should be noted, however, that the location of the components of the clamping mechanism can be reversed. Any suitable clamping mechanism can be used, including snaps, buttons, VELCRO, and quick-grip stickers.
[0028] Figures 1-4 show an embodiment in which each flexible element 10 has a single clamping mechanism. Figure 5 shows an alternative embodiment where each flexible element 10 has more than one clamping mechanism. Figure 5 shows a flexible element 10 having two fastening elements 14. A first fastening element 14a is positioned on one side of the intermediate element 81 and a second fastening element 14b is positioned on a second side of the intermediate element 18. The elements The fasteners 14a, 14b are received by one or more openings 16 in the intermediate element 18.
[0029] Figures 8 and 9 show an alternative embodiment in which the fastening mechanism comprises a ratchet system or locking pawl. This system is analogous to a cable buckle in that a protruding locking tab allows movement of the flexible element 10 in one direction, but not in the opposite direction. As shown, the pawl locking system has a shank 40 with a multiplicity of teeth combined with the flexible elements 10 and a locking pawl 42 is combined with the intermediate element 18. It should be noted, however, that the location of the components of clamping mechanism can be reversed. The locking tab 42 interferes with the teeth to allow the flexible elements 10 to move in a first (downward) direction, but prevent the flexible elements 10 from moving in the second (opposite) direction. In some embodiments, the pawl 42 comprises a release mechanism that can be manually activated by the user to release interference between the pawl 42 and the teeth, thus allowing movement of the flexible elements 10 in the second (upward) direction. The teeth engage with the locking tab 42 so that it allows the flexible element 10 to be secured in multiple locking positions to fit a variety of thicknesses of tile 32.
[0030] Figure 11 shows an embodiment in which the openings 16 in the intermediate element 18 are larger than the fastening elements 14. In the shown embodiment, the openings 16 are oval, however they can be of any suitable shape, including slots , or circles. Larger openings 16 allow fasteners 14 to be secured in a number of different positions depending on the thickness of tile 32. That is, for a thicker tile 32, fasteners 14 may be closer to the top of the tile. openings 16 and for a tile 32 of lesser thickness the fixing elements 14 can be found closer to the bottom of the openings 16. This feature allows the device to be used with tiles 32 having different thicknesses.
[0031] Figures 6 and 7 show the device being used with tile 32. A typical first step when laying tiles 32 is to apply a laying bed 30, such as a cement or mortar compound, onto a substrate surface . Thereafter, the tiles 32 can be placed on the laying bed 30. During these steps, the bottom plate 12 is positioned on the laying bed 30 under the tiles 32, so that the intermediate element 18 extends upwardly between adjacent tiles. . Bottom plate 12 is preferably positioned such that it is in contact with more than one tile 32. Flexible elements 10 are in their first position as tiles 32 are placed on bottom plate 12. Then, the flexible elements 10 are moved to their second position and secured by the clamping mechanism. In the second position, the second end 10b of the flexible elements 10b is pressed against the top of the tiles 32 so that the top of the tiles 32 is interposed between the second end 10b of the flexible element and the bottom plate 12. The compression between these two components makes the edges of the tiles 32 line up in the same plane with minimal or no unevenness at all. In the embodiment shown in Figures 2 and 6, the second end 10b of the flexible elements is rounded. This rounded shape helps to reduce the resistance between the second end 10b of the flexible element and the tile 32 as the second end 10b of the flexible elements passes over the top of the tile 32 as it moves into its second position. Any rounded shape including oval, cylindrical and semicircular would also work to minimize drag.
[0032] In some embodiments, the flexible elements 10 are made of a generally rigid material that has a slightly flexible or spring-like quality, such as a plastic composite. As best shown in the embodiment of Figure 2, a portion of the flexible elements 10 is curved. The flexibility and curvature of the flexible elements 10 allow the device to be used with tiles 32 of different thickness, as the flexible elements 10 can simply be bent or flexed to a thicker tile 32 as they are moved into the its second position and secured by the clamping mechanism. The flexible elements 10 are moved from their first position to their second position and are then fixed in their second position. To function properly, the tile 32 must have a thickness greater than the distance D (Figure 2) between the second end 10b of the flexible element and the bottom plate 12 to allow the second end 10b of the flexible element to exert a force on the tile 32 when it is in its second position. Figures 11 and 13 show an embodiment where the flexible elements 10 comprise a bend 10c which helps them to flex even more than the flexible elements 10 shown in Figure 2 to accept different thicknesses of tile. In some embodiments, portions of the intermediate portion 18 are also flexible. This can be seen in Figure 13, where the horizontal portion of the intermediate portion 18 flexes upwardly at its outer end when the flexible element 10 is in its second position. Figure 12 shows an embodiment having an opening 19 in the flexible elements 10. This opening 19 is adapted to receive a portion of the intermediate portion 18 as the flexible elements 10 are moved from their first position to their second position. This helps with alignment, thus making it easier for the user to secure the clamping mechanism in its proper position.
[0033] Figures 14 and 15 show an alternative embodiment in which the bottom plate 12 has a rod 15 extending upwards from it and the intermediate element 18 has an opening adapted to receive the rod. Intermediate element 18 is prevented from moving upward along rod 15 by any suitable locking mechanism, including a locking pawl system (similar to the locking pawl system described above) wherein the locking mechanism allows the intermediate element 18 moves in the first direction along the shank (towards the bottom plate 12), but prevents intermediate element 18 from moving in a second (opposite) direction. As shown in Figure 15, when the tiles 32 are properly positioned and the bottom plate is placed under the tiles 32, as described above for the above embodiments, the intermediate element 18 is moved down along the rod 15 towards the tiles 32. The flexible elements 10 are then moved from their retracted position (Figure 14) to their compressed position (Figure 15) where they exert a force against the tiles 32. The distance between the top of the intermediate element 18 (approximately point 10a ) and the top of the tile 32 is shorter than the length of the flexible elements 10. This causes the flexible elements 10 to bend as they are moved into their compressed position which in turn causes them to exert a force. against the 32 tiles as they try to get back to their relaxed state. Flexible elements 10 remain in the compressed position until a user forces flexible elements 10 back to their retracted position. The flexible elements 10 remain in their compressed position without the aid of any clamping mechanism, since, in the compressed position, the second end 10b of the flexible elements 10 is pushed into a position where it is below or within the first end 10a (closer to the rod 15 than it is) of the flexible elements 10. The flexible elements 10 remain compressed or locked in their compressed position, since the distance between the first end 10a and the second end 10b is greater than the distance between the first end 10a and the tile 32. That is, the already compressed flexible elements 10 would need to become even more compressed (bent) to move from their compressed position to their retracted position. This causes the flexible elements 10 to be locked or compressed in their compressed position without the aid of any clamping mechanism.
[0034] It should be noted that the modality described in the preceding paragraph and shown in Figures 14 and 15, in which the intermediate element 18 slides along a rod 15, can use fixing mechanisms (as described for other embodiments) to secure the flexible elements 10 in their down position instead of the locking engagement means described in the preceding paragraph. Similarly, embodiments shown and described herein in which the intermediate element 18 combines directly with the bottom plate 12 (without any rod 15) which uses clamping mechanisms to hold the flexible elements 10 in their down position can instead use the locking engagement means described in the previous paragraph.
[0035] As best seen in Figure 1, the bottom plate 12 preferably comprises one or more openings 28. The openings 28 allow the bed material to infiltrate through the bottom plate 12. This infiltration allows the material from the laying bed 30 to bond to the portion of the tile 32 directly above the bottom plate 12, which otherwise might not come into contact with a large amount of the laying bed material 30. In addition, the infiltration helps that ensure that the tiles 32 remain level as forces are applied to the slab 12 to the laying bed material 30 and/or to the tiles 32 during leveling and laying. If the laying bed material 30 were not allowed to infiltrate through the bottom plate 12, the bed bed material 30 could cause the bottom plate 12 to rise as it dries, which would consequently affect the level of the tiles. 32.
[0036] After the laying bed has dried and the tiles 32 are fixed to the substrate, the user removes the portion of the device that is visible above the placed tiles 32, i.e. the intermediate element 18, the flexible elements 10 and the rod 15 (in some modalities). In the embodiment shown in Figures 1-13, the intermediate element 18 comprises a separation point 20 in proximity to the connection of the intermediate element 18 with the bottom plate 12. In the embodiment shown in Figures 14 and 15, the separation point 20 is on the rod 15 in the vicinity of its connection to the bottom plate 12. The separation point 20 is structurally weaker than the remainder of the intermediate element 18 (or rod 15), so that the user can apply a force to the portion of the intermediate element 18 (or rod 15) that extends above the tiles 18 to cause the intermediate element 81 (or rod 15) to break at its point of separation 20. In some embodiments, the point of separation 20 comprises a single opening that allows the point of separation 20 is structurally weaker and separates when adequate force is applied by the user. In the embodiment shown in Figures 1 and 11, the separation point 20 comprises a multiplicity of micro holes or perforations that allow the separation point 20 to be structurally weaker and to separate when an adequate force is applied by the user. In the embodiment shown in Figures 1 and 2, the separation point 20 includes an outer sloping portion 21 wherein the intermediate element 18 tapers inwardly on each side. This sloping outer portion 21 makes it easier for the user to separate the intermediate portion 18 from the bottom plate 12. In one embodiment, the curing process of the laying bed extracts moisture from the intermediate element 18 (or rod 15) making it more friable. This makes it easier for the user to produce the break at the point of separation 20. Once separated at the point of separation 20, the bottom plate 12 remains under tiles 32 and is therefore not reusable. The intermediate element 18 (or rod 15) is preferably made of a semi-rigid nylon, which allows it to be more easily broken at its point of separation 20.
[0037] Figures 10 and 14 show an embodiment in which at least a portion of the bottom plate 12 is constituted by a material that has a flexible, or spring-like quality, analogous to the types of materials that can be used for the flexible elements 10. The flexible portion 50 of the bottom plate 12 is displaceable between a compressed position and a retracted position. The flexible portion 50 of the bottom plate 12 is inclined in its retracted position where the flexible portion 50 extends upwardly. The weight of the tiles 32 or the force applied from above causes the flexible portion 50 to move into its compressed position. In the compressed position the flexible portion 50 exerts an upward force on the tiles 32 as it tries to return to its retracted position. In some embodiments, bottom plate 12 comprises two flexible portions 50 to allow the device to be used at the intersection of two tiles 32 and in other embodiments bottom plate 12 comprises four flexible portions 50 to allow the device to be used at the intersection. of four tiles 32. In the embodiment shown in Figures 10 and 14 each flexible portion 50 is initiated in proximity to the center of the bottom plate 12 and extends upwardly and outwardly therefrom. In other embodiments, flexible portion 50 begins near the outer ends of bottom plate 12 and extends upward and inward. As shown in Figure 10, the flexible portion 50 of the bottom plate 12 can be thinned so that it is thinner at its outer end to allow the device to be easily inserted under the tiles 32.
[0038] When using the modality shown in Figures 10 and 14, after the flexible element 10 is fixed in place, the flexible elements 10 exert a downward force against the top of the tiles 32, while the flexible portion 50 of the plate The bottom 12 exerts an upward force against the underside of the tiles 32. The opposing forces cooperate to help ensure that the tiles 32 are securely held between the flexible element 10 and the bottom plate 12 to help ensure a level surface.
[0039] The modality shown in Figures 10 and 14 is also useful in situations where adjacent tiles 32 have different thicknesses. The flexible portion 50 of the bottom plate 12 can be compressed under the weight of the thicker (heavier) tile 32, while the flexible or spring-like quality of the bottom plate 12 can remain in its retracted position under the tile. 32 thinner (lighter) keeping the two adjacent 32 tiles at the same elevation. In this way, the tile aligning and leveling device is self-adjusting after it has been placed under the tiles 32.
[0040] Most existing leveling systems require tools, some of which are very expensive. A feature of this device is that no tools are required, as the flexible elements 10 can be made to exert a force against the tiles 32 only with the user's hands. There is no need for any tools for installation, this device becomes more affordable for the “do it yourself” market.
[0041] Having thus described the invention in connection with its preferred embodiments, it will be evident to those skilled in the art that various revisions can be made to the preferred embodiments described herein, without departing from the spirit and scope of the invention. It is my intention, however, that all such revisions and modifications that are evident to those skilled in the art be included within the scope of the appended claims.

权利要求:
Claims (14)
[0001]
1. Device for laying and leveling tiles (32), characterized in that it comprises: - a base plate (12) having an upper side and a lower side; - a flexible element (10) having a first end ( 10a) and a second end (10b); - an intermediate element (18) connecting the bottom plate to the flexible element (10); - the first end (10a) of the flexible element (10) being hingedly combined with the intermediate element (18) thus allowing the flexible element (10) to rotate between a first position and a second position; and - a clamping mechanism having a first element combined with the flexible element and a second element combined with the intermediate element ( 18), said fixing mechanism for fixing the flexible element (10) in its second position.
[0002]
2. Device according to claim 1, characterized in that the first element of the fastening mechanism is a fastening element and the second element of the fastening mechanism is an opening adapted to receive the fastening element (14).
[0003]
3. Device according to claim 1, characterized in that the second element of the fastening mechanism is a fastening element and the first element of the fastening mechanism is an opening adapted to receive the fastening element (14).
[0004]
4. Device according to claim 1, characterized in that the first element of the fastening mechanism is a rod (40) with a multiplicity of teeth and the second element of the fastening mechanism is a locking tab (42) adapted to receive the rod (40).
[0005]
5. Device according to claim 1, characterized in that the second element of the fastening mechanism is a rod (40) with a multiplicity of teeth and the first element of the fastening mechanism is a locking tab (42) adapted to receive the rod (40).
[0006]
6. Device according to claim 1, characterized in that the intermediate element (18) further comprises a separation point that is structurally weaker than the rest of the intermediate element (18) to allow the intermediate element ( 18) is separated from the bottom plate (12).
[0007]
7. Device according to claim 1, characterized in that the flexible element (10) can be fixed in a third position to fit tiles of a different thickness, wherein said third position is between said first position and said second position.
[0008]
8. Device according to claim 1, characterized in that the rod (40) is resilient thus allowing it to extend longitudinally along its length from a first position to a second position, the rod being inclined in its first position.
[0009]
9. Device according to claim 1, characterized in that the bottom plate (12) comprises at least one opening to allow the infiltration of the bed material (30).
[0010]
10. Device according to claim 1, characterized in that the bottom plate (12) further comprises a flexible portion which extends upwards above the upper surface of the bottom plate (12) and is displaceable between a position compressed and a retracted position, the flexible portion being inclined in its retracted position.
[0011]
11. Device for laying and leveling tiles, characterized in that it comprises: - a base plate (12) having an upper side and a lower side; - a flexible element (10) having a first end (10a) and a second end (10b); - an intermediate element (18) connecting the bottom plate (12) to the flexible element (10); - the first end (10a) of the flexible element (10) being hingedly combined with the intermediate element (18) thus allowing the flexible element (10) to rotate between a first position and a second position; and - at least two fixing mechanisms, each having a first element combined with the flexible element (10) and a second element combined with the intermediate element (18), said fixing mechanism for fixing the flexible element (10) in its second position.
[0012]
12. Device for laying and leveling tiles, characterized in that it comprises: - a bottom plate (12) having an upper side and a lower side; - a flexible element (10) having a first end (10a) and a second end (10b); - an intermediate element (18) connecting the bottom plate (12) to the flexible element (10); - the first end (10a) of the flexible element (10) being hingedly combined with the intermediate element (18) thus allowing the flexible element (10) to rotate between a first position where it is further away from the bottom plate (12) and a second position where it is closer to the bottom plate (12 ); and - a clamping mechanism combined with the flexible element (10) for lockingly engaging with the tile (32) when in its second position; - the bottom plate (12) further comprising a flexible portion that engages it extends upward above the upper surface of the bottom plate (12) and is displaceable between a compressed position and a retracted position, the flexible portion being inclined in its retracted position.
[0013]
13. Device according to claim 12, characterized in that the intermediate element (18) further comprises a separation point that is structurally weaker than the rest of the intermediate element (18) to allow the intermediate element ( 18) is separated from the bottom plate (12).
[0014]
14. Device according to claim 12, characterized in that the bottom plate (12) comprises at least one opening to allow infiltration of material from the laying bed (30).

类似技术:

公开号 | 公开日 | 专利标题

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法律状态:
2018-12-04| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|

2020-01-28| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|

2021-06-01| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|

2021-07-20| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 29/03/2013, OBSERVADAS AS CONDICOES LEGAIS. |

优先权:

申请号 | 申请日 | 专利标题

US201261617487P| true| 2012-03-29|2012-03-29|

US61/617,487|2012-03-29|

US13/853,523|2013-03-29|

PCT/US2013/034637|WO2013149166A1|2012-03-29|2013-03-29|Tile alignment and leveling device|

US13/853,523|US8820031B2|2012-03-29|2013-03-29|Tile alignment and leveling device|

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