Title:
Method of making sheet metal
United States Patent 2187595
Inventors:
Wean, Raymond J.
Publication Date:
01/16/1940
Assignee:
WEAN ENGINEERING COMPANY INC
Other Classes:
29/17.5, 148/633
International Classes:
B21B1/22; C21D8/02; B21B1/22; C21D8/02