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US Patent: 92,261
Improvement in Countersink
Patentee:
R. P. Buttles - Mansfield, PA

USPTO Classifications:
408/193

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
F. W. Clark
A. J. Webster

Patent Dates:
Granted: Jul. 06, 1869

Patent Pictures:
USPTO pdf tiff
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