Title:
Method of producing structural members
Document Type and Number:
United States Patent 2376574
Inventors:
Tappan, Collins
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Publication Date:
05/22/1945
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Referenced by:
Export Citation:
Assignee:
CARNEGIE ILLINOIS STEEL CORP
Primary Class:
Other Classes:
228/136, 403/271, 29/897.350, 228/225, 428/581, 228/213
International Classes:
B23K33/00