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Auger mining machine
United States Patent 3091439
US Patent References:
Mining machine
- - 2616677
Pan guideway for rotary mining head
- - 2719708
Mining machine having independently operable skids
- - 2935309
Multiple coal auger
- - 2951693
Inventors:
Adams, George L.
Govin, Charles T.
Publication Date:
05/28/1963
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Download PDF 3091439
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Assignee:
SALEM TOOL CO
Primary Class:
299/31
Other Classes:
175/85, 299/56
International Classes:
E21C27/22
;
E21C27/00