Stepladder

Details Stepladder Stepladder

1997-02-18

1997-12-16

Clark, Doris

Building units and construction elements

Stair, ladder, scaffold, or similar support

Stepped

2504

Patent

active

D03878783

REFERENCES:
patent: D189419 (1960-12-01), Blair
patent: D295222 (1988-04-01), Rudolph
patent: 2066108 (1936-12-01), Hedges
patent: 4718518 (1988-01-01), Brown

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