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United States Patent 1823537

Inventors:
Gaudreau, Charles D.
Publication Date:
09/15/1931
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Assignee:
BAY STATE TOOL & MACHINE CO
Primary Class:
269/241
Other Classes:
269/242, 269/902, 269/285, 24/135N, 451/365
International Classes:
B25B1/10; B25B1/00