Ladder extension

Details Ladder extension Ladder extension

1995-10-30

1997-06-24

Clark, Doris

Building units and construction elements

Stair, ladder, scaffold, or similar support

Element or attachment

2504

Patent

active

D03802779

REFERENCES:
patent: D341664 (1993-11-01), NewKirk
patent: 4723629 (1988-02-01), Hoek et al.

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