Extension ladder hoist

Details Extension ladder hoist Extension ladder hoist

1977-06-09

1978-12-05

Blix, Trygve M.

Implements or apparatus for applying pushing or pulling force

Method or apparatus for placement of conductive wire

Conduit snakes

182101, 187 11, B66C 2360

Patent

active

041282280

ABSTRACT:
A support having a hoist for raising and lowering articles from one elevation to another in which one portion of the support is a ladder.

REFERENCES:
patent: 731708 (1903-06-01), Quinn
patent: 921431 (1909-05-01), Miller
patent: 1086601 (1914-02-01), Mangel
patent: 2069607 (1937-02-01), Gaw
patent: 2714434 (1955-08-01), Peterson
patent: 3115211 (1963-12-01), Ostrander, Jr.
patent: 3222034 (1965-12-01), Jackson

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