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US Patent: 112,176
Improvement in countersinks
Patentee:
Frank H. Palmer (exact or similar names) - Foxcroft, ME

USPTO Classifications:
408/191

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Augustus G. Lebroke
Horace F. Grant

Patent Dates:
Granted: Feb. 28, 1871

Patent Pictures:
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