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US Patent: 305,452
Gas Engine
Patentees: George M. Hopkins (exact or similar names) - Brooklyn, NY I. Newton Hopkins (exact or similar names) - Brooklyn, NY USPTO Classifications: 123/39 Tool Categories: propulsion and energy : internal combustion engines : gas and gasoline engines Assignees: None Manufacturer: Not known to have been produced Witnesses: Frank M. Clute Herman C. Hagen Henry F. Parker	Patent Dates: Applied: Feb. 26, 1884 Granted: Sep. 23, 1884 Patent Pictures: [ 1 | 2 ] USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Economic Motor Co.

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