Crimped thread
United States Patent 2234763

Inventors:
Franz, Hoelkeskamp
Publication Date:
03/11/1941
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Assignee:
AMERICAN BEMBERG CORP
Primary Class:
264/168
Other Classes:
425/71, 264/199, 425/462, 425/114, 264/259, 28/247
International Classes:
D01F2/04; D01F2/00