Fire escape – ladder – or scaffold – Unitary foldable – rigid scaffold or ladder – Collapsible ladder
Patent
1985-04-24
1986-02-11
Machado, Reinaldo P.
Fire escape, ladder, or scaffold
Unitary foldable, rigid scaffold or ladder
Collapsible ladder
182162, 182170, E06C 1383
Patent
active
045694192
ABSTRACT:
The present invention relates to a foldable stepladder constituted by:
REFERENCES:
patent: 419821 (1890-01-01), Burrows
patent: 958732 (1910-05-01), Dennis
patent: 1054108 (1913-02-01), Garraway
patent: 1108896 (1914-09-01), Garraway
patent: 1337361 (1920-04-01), Kasper
patent: 1783686 (1930-12-01), Williams
patent: 2184486 (1939-12-01), Chew
patent: 3084760 (1963-04-01), Lamberti
Machado Reinaldo P.
Nawrocki Lawrence M.
Stoltz Denyse
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