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Patent number:
Patent Date:
US Patent: 252,537
Speed Gearing
Patentee:
John Stewart (
exact
or
similar
names) - Newark, Essex County, NJ
USPTO Classifications:
475/159
,
475/320
Tool Categories:
industrial machines
:
industrial machine mechanisms
:
industrial machine speed and direction changing mechanisms
Assignees:
None
Manufacturer:
Not known to have been produced
Witnesses:
Unknown
Patent Dates:
Applied:
Dec. 02, 1881
Granted:
Jan. 17, 1882
Patent Pictures:
USPTO
(New site tip)
Google Patents
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