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Patent number:
Patent Date:
US Patent: 937,993
Engine Governor
Patentee:
Stephen S. Hall (
exact
or
similar
names) - Portland, Middlesex County, CT
USPTO Classifications:
403/81
,
73/543
,
74/586
Tool Categories:
propulsion and energy
:
steam engines
:
steam engine governors
Assignees:
Pickering Governor Co.
- Portland, Middlesex County, CT
Manufacturer:
Not known to have been produced
Witnesses:
Unknown
Patent Dates:
Applied:
May 17, 1909
Granted:
Oct. 26, 1909
Patent Pictures:
USPTO
(New site tip)
Google Patents
Report data errors or omissions to steward Joel Havens
"Vintage Machinery" entry for Pickering Governor Co.
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