Title:
Method of milling an undercut slot in a screw head
Document Type and Number:
United States Patent 2745120
Inventors:
Vaughn, Rudolph M.
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Publication Date:
05/15/1956
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Assignee:
Vaughn, Rudolph M.
Primary Class:
Other Classes:
409/66
International Classes:
B23C3/34; B23G9/00; B23C3/00
US Patent References: