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US Patent: 96,881
Improvement in bit-braces
Patentee:
Calvin L. Butler (exact or similar names) - Greenfield, MA

USPTO Classifications:
279/62

Tool Categories:
woodworking tools : braces : brace chucks

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
J. H. Flagg
Bela Kellogg
Patent Dates:
Granted: Nov. 16, 1869

Patent Pictures:
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