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Patent number:
Patent Date:
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:
USPTO
(New site tip)
Google Patents
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