Die apparatus
United States Patent 2591108
US Patent References:
/0798530.html
- - 0798530

/0913841.html
- - 0913841

/1270933.html
- - 1270933

Apparatus for forming sheet metal caps
- - 1884708

Apparatus for forming sheet metal caps
- - 1904920


Inventors:
Vigneault, Oswald R.
Small, Douglas M.
Publication Date:
04/01/1952
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Assignee:
PRODUCTION TOOL AND DIE CO INC
Primary Class:
72/336
Other Classes:
72/347, 72/344, 72/426
International Classes:
B21D22/02; B21D22/00
US Patent References:
2177027Die for forming and knurling sheet metal can tops
2270186Film drawing and trimming machine
2331490Blanking and forming die