Tool retainer
United States Patent 2107581
Inventors:
Parsons, John H.
Lamb, Lawrence S.
Lamb, Lawrence S.
Publication Date:
02/08/1938
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Assignee:
Parsons, John H.
Lamb, Lawrence S.
Lamb, Lawrence S.
Primary Class:
Other Classes:
83/698.910, 83/698.310
International Classes:
B21D28/34