Metal and process of manufacture
United States Patent 1775159

Inventors:
Donaldson, Joseph G.
Coles, Henry L.
Publication Date:
09/09/1930
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Assignee:
GUARDIAN METALS COMPANY
Primary Class:
148/432
Other Classes:
75/10.470, 75/652, 75/10.460, 75/10.590, 75/10.500, 75/10.540, 75/10.480
International Classes:
C22B9/00; C22B15/00