Method of purifying lead, tin, and lead-tin alloys
United States Patent 1957837

Inventors:
Kern, Edward F.
Publication Date:
05/08/1934
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Assignee:
NAT LEAD CO
Primary Class:
75/690
Other Classes:
75/702
International Classes:
C22B13/06; C22B25/08; C22B13/00; C22B25/00