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US Patent: 392,119
Method of Twisting Augers
Patentee:
Martin Hardsocg - Ottumwa, IA

USPTO Classifications:
72/299, 72/371, 76/108.6

Tool Categories:
tool making : making drills and augers
woodworking tools : hand drills : drill bits : auger bits

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
J. S. Surbaugh
P. Riordan

Patent Dates:
Applied: Mar. 11, 1888
Granted: Oct. 30, 1888

Patent Pictures:
USPTO pdf tiff
Google Patents
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