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Patent number:
Patent Date:
US Patent: 120,716
Improvement in boring-machines
Patentee:
George F. Cluff (
exact
or
similar
names) - Petersburg, IL
USPTO Classifications:
292/DIG.035
,
408/135
,
408/138
Tool Categories:
metalworking machines
:
drilling and boring
Assignees:
None
Manufacturer:
Not known to have been produced
Witnesses:
Isaac A. Tyler
R. Van Deusen
Patent Dates:
Granted:
Nov. 07, 1871
Patent Pictures:
USPTO
(New site tip)
Google Patents
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