Method of forming indestructible type impact tools
United States Patent 2884816
Inventors:
Lay, Clarence M.
Publication Date:
05/05/1959
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Assignee:
VAUGHAN & BUSHNELL MFG CO
Primary Class:
Other Classes:
81/20
International Classes:
B21K5/14; B25D1/00; B21K5/00
Other References:
None