Platform for supporting a ladder on stairs

Details Platform for supporting a ladder on stairs Platform for supporting a ladder on stairs

1980-10-14

1983-03-01

Word, A. Hugo

Building units and construction elements

Stair, ladder, scaffold, or similar support

Element or attachment

D 6 40, D0699

Patent

active

D02681331

REFERENCES:
patent: 1057722 (1913-04-01), Goetz
patent: 2093763 (1937-09-01), Lee
patent: 2616774 (1952-11-01), Prince
patent: 2730412 (1956-01-01), Yoder
patent: 2848282 (1958-08-01), Weber

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