Ladder leveler

Details Ladder leveler Ladder leveler

1998-03-16

2000-03-28

Clark, Doris

Building units and construction elements

Stair, ladder, scaffold, or similar support

Element or attachment

2504

Patent

active

D04220919

REFERENCES:
patent: 4069890 (1978-01-01), Gottliebsen
patent: 4699247 (1987-10-01), Clarke
patent: 5339921 (1994-08-01), Faupel

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