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US Patent: 56,059
Improvement in Drill-Chucks
Patentee:
Frank G. Johnson (exact or similar names) - Brooklyn, NY

USPTO Classifications:
279/43.3, 279/43.6

Tool Categories:
woodworking tools : hand drills : drill chucks

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Horace May
A. M. Mills
Patent Dates:
Granted: Jul. 03, 1866

Patent Pictures:
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