Fluid-operated jack
United States Patent 1720434

Inventors:
Pedersen, Thomas W.
Publication Date:
07/09/1929
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Assignee:
OIL JACK INC
Primary Class:
60/481
Other Classes:
297/344.160, 297/344.190, 91/454, 100/269.010, 91/401
International Classes:
B66F3/25; B66F3/24