Ladder

Details Ladder Ladder

1983-12-30

1985-10-29

Machado, Reinaldo P.

Fire escape, ladder, or scaffold

Convertible

Ladder

182160, 182162, E06C 1383

Patent

active

045496323

ABSTRACT:
A ladder wherein a plurality of rounds are pivotally and turnably mounted to and between the right stanchion and the left stanchion at proper spaces, and supporting arm levers are detachably fixed from both stanchions to the round by bolts or machine screws.

REFERENCES:
patent: 341284 (1886-05-01), Sharp
patent: 357233 (1887-02-01), Russell
patent: 1894489 (1933-01-01), Hirose
patent: 2727671 (1955-12-01), Ollerhead
patent: 4284171 (1981-08-01), Owen

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