Ladder extension and leveler

Details Ladder extension and leveler Ladder extension and leveler

1975-08-14

1976-12-21

Machado, Reinaldo P.

Fire escape, ladder, or scaffold

Ladder

Supporting surface compensating means

E06C 744

Patent

active

039982939

ABSTRACT:
A ladder extension and level that is adapted to be used in conjunction with ladders having hollow rungs and a further embodiment for solid rung ladders.

REFERENCES:
patent: 1246709 (1917-11-01), Brown
patent: 2146759 (1939-02-01), Panowitz
patent: 2723071 (1955-11-01), Merryweather
patent: 2903086 (1959-09-01), Chubbs
patent: 2936849 (1960-05-01), Larson
patent: 3032140 (1962-05-01), Hunt
patent: 3059723 (1962-10-01), Shore
patent: 3266593 (1966-08-01), Okie
patent: 3554321 (1971-01-01), Stedman

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