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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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