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Patent number:
Patent Date:
US Patent: 975,356
Belt Shifter
Patentee:
Bengt M. W. Hanson (
exact
or
similar
names) - Hartford, Hartford County, CT
USPTO Classifications:
474/81
Tool Categories:
industrial machines
:
industrial machine mechanisms
:
industrial machine pulleys and belt drive mechanisms
Assignees:
Pratt & Whitney Co.
- Hartford, Hartford County, CT
Manufacturer:
Not known to have been produced
Witnesses:
Unknown
Patent Dates:
Applied:
Jan. 21, 1909
Granted:
Nov. 08, 1910
Patent Pictures:
USPTO
(New site tip)
Google Patents
Report data errors or omissions to steward Joel Havens
"Vintage Machinery" entry for Pratt, Whitney & Co.
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