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Patent number:
Patent Date:
US Patent: 512,850
Belt Tightener and Shifter
Patentee:
Theodore F. Vandergrift (
exact
or
similar
names) - Shelbyville, Shelby County, IN
USPTO Classifications:
474/113
,
474/79
,
474/89
Tool Categories:
industrial machines
:
industrial machine mechanisms
:
industrial machine pulleys and belt drive mechanisms
Assignees:
None
Manufacturer:
Not known to have been produced
Witnesses:
Unknown
Patent Dates:
Applied:
Jul. 22, 1893
Granted:
Jan. 16, 1894
Patent Pictures:
USPTO
(New site tip)
Google Patents
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