Method and apparatus for deep drawing of metals
United States Patent 2739557
US Patent References:
/0368526.html
- - 0368526

/0460551.html
- - 0460551

/0460594.html
- - 0460594

/0483008.html
- - 0483008

Pressure cushion
- - 1636110


Inventors:
Walter, Staubitz Wilhelm
Publication Date:
03/27/1956
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Assignee:
Charles, Nevin Fouse
Primary Class:
72/329
Other Classes:
72/349
International Classes:
B21D22/24; B21D22/20
US Patent References:
1649841Art of drawing sheet metal
1837720Method of making light reflectors
2602411Means for drawing material