Control system
United States Patent 1951426

Inventors:
Littler, Carl W.
Publication Date:
03/20/1934
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Assignee:
JONES & LAUGHLIN STEEL CORP
Primary Class:
72/12.200
Other Classes:
72/251, 134/57R, 198/952, 236/15BC, 374/127, 432/45, 266/87, 250/223R, 38/1C, 236/15R
International Classes:
C21D11/00