Title:
Punch for fluting gun-barrel chambers
United States Patent 2464323

Inventors:
Lee, John W.
Publication Date:
03/15/1949
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Assignee:
GEN MOTORS CORP
Primary Class:
72/479
Other Classes:
42/78
International Classes:
B21C37/15; B21J5/12; B21J5/06
US Patent References:
2384800Method of forming flowmeter tube mandrels