Ladder

Details Ladder Ladder

1983-07-20

1988-04-12

Word, A. Hugo

Building units and construction elements

Stair, ladder, scaffold, or similar support

Stepped

Patent

active

D02952220

REFERENCES:
patent: D258148 (1981-02-01), Loix
patent: 444276 (1891-01-01), Goldberg
patent: 3722622 (1973-03-01), Lauring

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