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US Patent: 206,006
Improvement in bit-clamps
Patentee:
Alfred H. Crockford (exact or similar names) - Newark, NJ

USPTO Classifications:
279/89

Tool Categories:
woodworking tools : braces : brace chucks

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
C. Sedgwick
Paul Goepel

Patent Dates:
Applied: May 02, 1878
Granted: Jul. 16, 1878

Patent Pictures:
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