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US Patent: 161,031
Bit-stock with rotating chuck
Patentee:
Hobert C. Hart (exact or similar names) - Unionville, CT

USPTO Classifications:
279/91

Tool Categories:
woodworking tools : braces : brace chucks

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Granted: Mar. 23, 1875

Patent Pictures:
USPTO (New site tip)
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