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US Patent: 326,561
Gas Engine
Patentees: George M. Hopkins (exact or similar names) - Brooklyn, NY L. Newton Hopkins (exact or similar names) - Brooklyn, NY USPTO Classifications: 123/39, 123/53.1, 123/65V, 123/77 Tool Categories: propulsion and energy : internal combustion engines : gas and gasoline engines Assignees: None Manufacturer: Not known to have been produced Witnesses: Hugo Koelker H. C. Hagen H. F. Parker	Patent Dates: Applied: Dec. 22, 1884 Granted: Sep. 22, 1885 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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