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US Patent: 433,551
Gas Engine
Patentee: Elmer A. Sperry (exact or similar names) - Chicago, IL USPTO Classifications: 123/153, 123/162, 123/363, 123/47R, 123/58.3, 123/61V, 123/62 Tool Categories: propulsion and energy : internal combustion engines : gas and gasoline engines Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Dec. 12, 1887 Granted: Aug. 05, 1890 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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