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Patent number:
Patent Date:
US Patent: 562,421
Chuck
Patentee:
Francis H. Richards (
exact
or
similar
names) - Hartford, Hartford County, CT
USPTO Classifications:
279/61
Tool Categories:
metalworking machines
:
drilling and boring
:
drill presses
:
drill press chucks
Assignees:
None
Manufacturer:
Not known to have been produced
Witnesses:
Unknown
Patent Dates:
Applied:
Jan. 24, 1896
Granted:
Jun. 23, 1896
Patent Pictures:
USPTO
(New site tip)
Google Patents
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