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Patent number:
Patent Date:
US Patent: 933,923
Chuck
Patentee:
William G. Sanborn (
exact
or
similar
names) - Rockford, Winnebago County, IL
USPTO Classifications:
279/51
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:
Apr. 03, 1908
Granted:
Sep. 14, 1909
Patent Pictures:
USPTO
(New site tip)
Google Patents
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