Bending process
United States Patent 2983995
US Patent References:
Manufacture of return connections
- - 1463762
Method of forming return bends
- - 1775331
Manufacture of return connections
- - 1463762
Method of forming return bends
- - 1775331
Inventors:
Andre, Gresse
Publication Date:
05/16/1961
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Assignee:
Andre, Gresse
Primary Class:
Other Classes:
29/890.149, 72/369
International Classes:
B21C37/28; B21D7/06; B21C37/15; B21D7/00
Foreign References:
| GB680411A | ||||
| BE514786A | ||||
| FR1028236A | ||||
| FR1052124A | ||||
| AU154073B |