Booster socket wrench
United States Patent 2558897
US Patent References:
Socket wrench
- - 1648134

Pipe tong
- - 1885605

Speed change gear unit
- - 2302853


Inventors:
Akins, Stuart M.
Publication Date:
07/03/1951
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Assignee:
Akins, Stuart M.
Primary Class:
81/57.310
Other Classes:
475/323
International Classes:
B25B17/02; B25B17/00
Foreign References:
DE373436C
FR747887A