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Class Information
Number: 52/733.1
Name: Static structures (e.g., buildings) > Shaft (i.e., elongated rigid structure) > Ceiling hanger
Description: Structure wherein the shaft is intended to be located and configured to support an interior overhead panel, tile, etc.










Patents under this class:
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Patent Number Title Of Patent Date Issued
7293393 Perimeter clip for seismic ceilings Nov. 13, 2007
7143562 Suspension system and structure for securing border ceiling panels Dec. 5, 2006
7017317 Decorative ceiling panel and fastening system Mar. 28, 2006
6957517 Splice plate for faceted radius grid Oct. 25, 2005
6843033 Connecting mechanism for ceiling panel supporting stringers Jan. 18, 2005
6840021 System for installing suspended ceiling Jan. 11, 2005
6751922 Faceted radius grid Jun. 22, 2004
6729096 System for installing suspended ceiling May. 4, 2004
6722098 Beam for drywall ceiling Apr. 20, 2004
6701686 Ceiling grid with seal Mar. 9, 2004
6523314 Ceiling grid with resilient centering tabs Feb. 25, 2003
6434908 Method of caps fabricating rigid section bars to be articulated manually Aug. 20, 2002
6173544 Ceiling system and also a lath suitable for such a ceiling system Jan. 16, 2001
6155017 Truss structure Dec. 5, 2000
6047511 Grid tee with integrally stitched web Apr. 11, 2000
6041564 Clinched double web grid tee Mar. 28, 2000
6003279 Sunroom enclosure Dec. 21, 1999
5898987 Method of installing acoustical ceiling grid May. 4, 1999
5806261 Head track for a wall system Sep. 15, 1998
5694735 Method and a tool for crimping a tee or main Dec. 9, 1997
5390456 Decorative suspended ceiling Feb. 21, 1995
5325647 Composite ceiling grid Jul. 5, 1994
5315805 Device for erecting walls or ceilings, especially in exhibition constructions May. 31, 1994
5241798 Decorative suspended ceiling Sep. 7, 1993
5195289 Trim system for suspension ceilings Mar. 23, 1993
5088261 Curved grid tees for suspension ceilings Feb. 18, 1992
5033247 Clean room ceiling construction Jul. 23, 1991
4967530 Clean room ceiling construction Nov. 6, 1990
4932186 Reinforced bead Jun. 12, 1990
4926606 Ornamental ceiling system May. 22, 1990
4901485 Acoustical panel Feb. 20, 1990
4893444 Fire expansion joint for ceiling runner Jan. 16, 1990
4881355 Cold roll-formed structures and method and apparatus for producing same Nov. 21, 1989
4852325 Reinforced bead Aug. 1, 1989
4817357 Suspension ceiling grid tee Apr. 4, 1989
4794745 Tier drop grid system Jan. 3, 1989
4785595 Fire-rated main runner Nov. 22, 1988
4783946 Supporting rail for lower ceilings and attachments Nov. 15, 1988
4730433 End detail for ceiling runner Mar. 15, 1988
4727700 Ceiling or wall having improved fire resistance and method of installing the same Mar. 1, 1988
4720944 Suspended ceiling panel retaining system Jan. 26, 1988
4713919 Laser welded ceiling grid members Dec. 22, 1987
4606110 Tool and method for positioning ceiling runners Aug. 19, 1986
4570391 Connector for a filter bank supporting framework and method of assembling same Feb. 18, 1986
4554718 Method of reinforcing a ceiling runner Nov. 26, 1985
4549383 Suspended ceiling grid system Oct. 29, 1985
4549375 Ceiling construction Oct. 29, 1985
4548010 Concealed suspended ceiling system Oct. 22, 1985
4542615 Drop ceiling framework Sep. 24, 1985
4541215 Snap-in ceiling system Sep. 17, 1985

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