Metallurgy of ferrous metals
United States Patent 2275420

Inventors:
Clark, Frances H.
Dirkes, Robert F.
Publication Date:
03/10/1942
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Assignee:
Clark, Frances H.
Dirkes, Robert F.
Primary Class:
419/6
Other Classes:
419/29, 407/119, 75/243, 76/107.100, 76/101.100, 75/246, 428/932, 419/14
International Classes:
C22C33/02