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Household
Class Information
Number:
5/44.1
Name:
Beds
>
Sofa bed
>
Forward-turning back
> Advancing and unfolding seat
Description:
Device in which the forward-turning back is combined into a bed bottom with an unfolding seat.
Patents under this class:
Patent Number
Title Of Patent
Date Issued
8387176
Motorized mechanism for extending a sofa sleeper from a sitting position to a reclining position
Mar. 5, 2013
7488300
Bicentric hinge for use in a brace
Feb. 10, 2009
4398311
Folding sofa-bed mechanism
Aug. 16, 1983
4378609
Sofa bed with mattress longitudinally compressed for storage and method
Apr. 5, 1983
4205405
Convertible sofa-bed
Jun. 3, 1980
4190911
Convertible couch
Mar. 4, 1980
4123811
Convertible sofa bed and cover
Nov. 7, 1978
4037872
Convertible seat-bed
Jul. 26, 1977
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