Title:
Foundation auger
United States Patent 2294318

Inventors:
Rich, John R.
Publication Date:
08/25/1942
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Assignee:
Rich, John R.
Primary Class:
175/91
Other Classes:
175/195, 173/148, 175/320, 175/203, 175/173, 175/316
International Classes:
E21B7/00