Static structures (e.g. – buildings) – Stepped; e.g. – stair
Patent
1992-05-06
1993-08-31
Friedman, Carl D.
Static structures (e.g., buildings)
Stepped; e.g., stair
52 28, 182 81, E04F 1900
Patent
active
052397955
ABSTRACT:
A combination pull-down stairs and lighting assembly with the lighting assembly attached to the underside of the stairs such that, when retracted, the lighting assembly provides both cover for concealing the stairs and illumination for the space below the stairs. The lighting assembly can include a frame with a grating or translucent panel, or the lighting assembly can include a light fixture attached to a base plate.
REFERENCES:
patent: 1811709 (1931-06-01), Bessler
patent: 2384743 (1945-09-01), Hill
patent: 2580978 (1952-01-01), Triller
patent: 2691718 (1954-10-01), Bowers
patent: 2766372 (1956-10-01), Albris
patent: 3807528 (1974-04-01), Frank
patent: 4365449 (1982-12-01), Liautaud
patent: 4394714 (1983-07-01), Rote
patent: 4438604 (1984-03-01), McGourty, Jr. et al.
Keller Ladders--Installation Instructions.
Builders Square, p. 31 (Feb. 26, 1992).
Friedman Carl D.
Yip Winnie
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