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US Patent: 1,030,216
Indicator for Steam, Gas and Other Engines
Patentee: James N. Wallace (exact or similar names) - West Didsbury, Lancaster County, England USPTO Classifications: 346/119, 346/4, 346/49, 346/71 Tool Categories: propulsion and energy : steam apparatus : steam engine indicators propulsion and energy : internal combustion engines : internal combustion engine indicators Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Nov. 26, 1910 Granted: Jun. 18, 1912 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens The Story of the Steam Engine Indicator

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