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US Patent: 111,990
Improvement in combined augers and reamers
Patentee:
Owen W. Townsend (exact or similar names) - Fond du Lac, WI

USPTO Classifications:
408/118

Tool Categories:
woodworking tools : hand drills : drill bits : hollow bits

Assignees:
George O. Trowbridge - Fond du Lac, WI
Owen W. Townsend - Fond du Lac, WI

Manufacturer:
Not known to have been produced

Witnesses:
C. B. Martin
O. P. Bowe
Patent Dates:
Granted: Feb. 21, 1871

Patent Pictures:
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