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US Patent: 136,138
Improvement in Hollow Augers
Patentee:
Columbus W. Corr (exact or similar names) - Carlinville, IL

USPTO Classifications:
30/495

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Samuel Pitman
Jno. M. Palmer, Jr.
Patent Dates:
Granted: Feb. 25, 1873

Patent Pictures:
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