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Patent number:
Patent Date:
US Patent: 2,365,227
Engine Operation Analyzer
Patentee:
Charles Unterberg (
exact
or
similar
names) - Osborn, Greene County, OH
USPTO Classifications:
346/129
,
346/4
,
73/114.18
Tool Categories:
propulsion and energy
:
internal combustion engines
:
internal combustion engine indicators
Assignees:
None
Manufacturer:
Not known to have been produced
Witnesses:
Unknown
Patent Dates:
Applied:
May 11, 1943
Granted:
Dec. 19, 1944
Patent Pictures:
USPTO
(New site tip)
Google Patents
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