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US Patent: 886,021
Engine Indicator
Patentee:
Joseph W. Thompson (exact or similar names) - Salem, Columbiana County, OH

USPTO Classifications:
346/11, 346/4

Tool Categories:
propulsion and energy : steam apparatus : steam engine indicators

Assignees:
Buckeye Engine Co. - Salem, Columbiana County, OH

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Aug. 17, 1906
Granted: Apr. 28, 1908

Patent Pictures:
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Joel Havens
"Vintage Machinery" entry for Buckeye Engine Co.
The Story of the Steam Engine Indicator

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