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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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