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US Patent: 306,254
Gas Engine
Patentee: George M. 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 H. C. Hagen Gustrave Dietindi Fred. Huetwohl	Patent Dates: Applied: Jun. 20, 1884 Granted: Oct. 07, 1884 Patent Pictures: 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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