Title:
Method and means for deforming hollow members
United States Patent 2718048


Inventors:
Sedgwick, Robert K.
Application Number:
US7268749A
Publication Date:
09/20/1955
Filing Date:
01/25/1949
Assignee:
American, Steel Foundries
Primary Class:
Other Classes:
29/421.1, 72/54, 72/61, 72/368, 374/143
International Classes:
B21D53/90
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