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Patent number:
Patent Date:
US Patent: 118,552
Improvement in Augers
Patentee:
Hiram Pitcher (
exact
or
similar
names) - Fond du Lac, WI
USPTO Classifications:
175/381
,
408/118
Tool Categories:
woodworking tools
:
hand drills
:
drill bits
:
hollow bits
Assignees:
Hiram Pitcher
- Fond du Lac, WI
H. Trowbridge
- Fond du Lac, WI
G. O. Trowbridge
- Fond du Lac, WI
Manufacturer:
Not known to have been produced
Witnesses:
George T. Trowbridge
Henry Bowmann
Patent Dates:
Granted:
Aug. 29, 1871
Patent Pictures: [
1
|
2
]
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