METHOD AND APPARATUS FOR PRODUCING SMOOTH-EDGE BLANKED SHEET METAL PARTS
United States Patent 3488987

Inventors:
Stoeckli, Oscar W.
Publication Date:
01/13/1970
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Assignee:
Oscar, Stoeckli W.
Primary Class:
72/329
Other Classes:
83/519, 72/327, 72/328, 83/55
International Classes:
B21D28/16; B21D28/02; B21D31/02
US Patent References:
3372569Die to form and trim a round tapered container in one operation
3274818Apparatus for forming articles




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