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US Patent: 453,071
Gas Engine
Patentee: Issac F. Allman (exact or similar names) - New York, NY USPTO Classifications: 123/145R, 123/303, 123/311, 73/551 Tool Categories: propulsion and energy : internal combustion engines : gas and gasoline engines Assignees: None Manufacturer: Allman & Thompson - New York, NY Witnesses: Theo. G. Hoster Edgar Tate Charles Nida C. Sedgwick	Patent Dates: Applied: Feb. 11, 1891 Granted: May 26, 1891 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Allman & Thompson

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