Staircase

Details Staircase Staircase

1997-07-17

1998-10-20

Clark, Doris

Building units and construction elements

Stair, ladder, scaffold, or similar support

D25 63, 2504

Patent

active

D03999750

REFERENCES:
patent: D290044 (1987-05-01), Daly
patent: 1113368 (1914-10-01), Nesdale
patent: 5369921 (1994-12-01), Glen

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