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US Patent: 81,607
Improvement in Slotting-Auger
Bit for Mortising Machine
Patentee:
Peter Cunningham (exact or similar names) - Eckley, PA

USPTO Classifications:
408/226, 408/230

Tool Categories:
woodworking tools : hand drills : drill bits
woodworking machines : wood drilling and boring : mortising machines

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
William Gallagher
John Roach
Patent Dates:
Granted: Sep. 01, 1868

Patent Pictures:
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