Automatic machine for hardening gears
United States Patent 1948480

Inventors:
Heinrich, Schicht
Publication Date:
02/20/1934
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Assignee:
Firm, Ferd Klingelnberg Sohne W.
Primary Class:
266/78
Other Classes:
134/169R, 134/56R, 266/118
International Classes:
C21D9/32