United States Patent 2653494
Inventors:
Creutz, Edward C.
Publication Date:
09/29/1953
Assignee:
Creutz, Edward C.
Other Classes:
29/424, 148/516, 148/665, 72/46
International Classes:
B21J5/00
US Patent References:
| 2307243 | Drawing be-containing alloys | | | |