Title:
Milling screw-threads
United States Patent 1386279


Inventors:
George, Richards
Newman, Burt Leslie
Edward, Freeborn James
Application Number:
US37231520A
Publication Date:
08/02/1921
Filing Date:
04/08/1920
Assignee:
Richards, Thread Milling Machin
Primary Class:
International Classes:
B23G1/32
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