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US Patent: 1,213,340
Gas-engine
Patentee: Frank M. Davis (exact or similar names) - Milwaukee, WI USPTO Classifications: 123/41.82R, 123/41.84, 277/643, 92/171.1 Tool Categories: propulsion and energy : internal combustion engines : cylinders Assignees: None Manufacturer: Davis Manufacturing Co. - Milwaukee, WI Witnesses: Franklin Zellhoefer William Nelson	Patent Dates: Applied: Nov. 01, 1915 Granted: Jan. 23, 1917 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Davis & Thompson Co. "Vintage Machinery" entry for Davis Manufacturing Co.

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