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US Patent: 642,644
Rotary Engine
Patentee: William F. Temple (exact or similar names) - Elsberry, Lincoln County, MO USPTO Classifications: 415/186, 415/202 Tool Categories: propulsion and energy : steam apparatus : rotary steam engines Assignees: William F. Temple - Elsberry, Lincoln County, MO O. E. Temple - Elsberry, Lincoln County, MO Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Jun. 21, 1897 Granted: Feb. 06, 1900 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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