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Class Information
Number: 5/250
Name: Beds > Bedsteads > Having bottom > Of springs > Spiral springs only > Frames, sectional and collapsible > Folding
Description: Devices hinged together for folding flat upon each other.

Patents under this class:

Patent Number Title Of Patent Date Issued
8407834 Sturdy, collapsible, folding mattress support having the appearance of a box spring Apr. 2, 2013
8370973 Collapsible, folding mattress support having the appearance of a box spring with legs Feb. 12, 2013
8312576 Sturdy, collapsible, folding mattress support having the appearance of a box spring Nov. 20, 2012
7503086 Foldable bedding foundation with sliders Mar. 17, 2009
7376989 Foldable bedding foundation May. 27, 2008
6012190 Foldable bed with collapsible sinuous springs Jan. 11, 2000
5507047 Composite mattress assembly Apr. 16, 1996
5257424 Foldable bed Nov. 2, 1993
4899404 Elevation system for a bed assembly Feb. 13, 1990
4811932 Coil spring mattress core Mar. 14, 1989
4790519 Borderwire hinge clip Dec. 13, 1988
4771995 Collapsible box spring Sep. 20, 1988
4770397 Spring wire element for foundation unit Sep. 13, 1988
4654905 Body support for bed or seat Apr. 7, 1987
4620336 Body support for bed or seat Nov. 4, 1986
4541133 Sofa bed Sep. 17, 1985
4523342 Folding bed frame structure for sofa beds or the like Jun. 18, 1985
4489450 Body support for bed or seat Dec. 25, 1984
4377279 Steel wire foundation Mar. 22, 1983

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