Machine for preparing metal strips
United States Patent 1640147

Inventors:
Fedders, John M.
Stolp, Frank H.
Publication Date:
08/23/1927
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Assignee:
FEDDERS MFG CO INC
Primary Class:
72/186
Other Classes:
72/196, 277/924
International Classes:
B21D53/04; B21D53/02