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US Patent: 106,310
Improvement in Chisel for Cutting Gains
Patentee:
Hiram Bigelow - Skowhegan, ME

USPTO Classifications:
30/167.1

Tool Categories:
woodworking tools : chisels
woodworking tools : chisels : mortise chisels

Assignees:
None

Manufacturer:
Unknown

Witnesses:
Stephen Colman
C. D. Miller

Patent Dates:
Granted: Aug. 16, 1870

Patent Pictures: [ 1 | 2 | 3 | 4 | 5 | 6 ]
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Description:
Chisel for letting in butt hinges utilizing a gauge and spurs. Known example is marked PATD AUG 16'70

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