Method of forming curved and flanged metal members
United States Patent 3156034
US Patent References:
Method of forming handles for metal vessels
- - 1604807
Method of making structural beams
- - 2277615
Box sectional sill particularly for automobile chassis frames
- - 2784983
Method of forming handles for metal vessels
- - 1604807
Method of making structural beams
- - 2277615
Box sectional sill particularly for automobile chassis frames
- - 2784983
Inventors:
Gruetjen, Frederick A.
Publication Date:
11/10/1964
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Export Citation:
Assignee:
SMITH CORP A O
Primary Class:
Other Classes:
72/375, 72/378, 72/372, 280/781, 72/394, 72/411
International Classes:
B21D7/06; B21D7/00