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Patent number:
Patent Date:
US Patent: 443,481
Portable Steam Engine
Patentee:
Ephraim Howland (
exact
or
similar
names) - Pontiac, Oakland County, MI
USPTO Classifications:
180/36
,
180/53.1
,
60/668
Tool Categories:
propulsion and energy
:
steam apparatus
:
portable steam engines
Assignees:
None
Manufacturer:
Not known to have been produced
Witnesses:
Unknown
Patent Dates:
Applied:
Feb. 12, 1889
Granted:
Dec. 23, 1890
Patent Pictures:
USPTO
(New site tip)
Google Patents
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