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US Patent: 550,742
Rotary Gas Engine
Patentee: Wesley R. Campbell (exact or similar names) - Philadelphia, PA USPTO Classifications: 123/363, 251/279, 415/165, 415/186, 415/45, 60/39.08, 60/39.27, 60/39.38, 60/39.44, 60/805 Tool Categories: propulsion and energy : internal combustion engines : rotary engines Assignees: George J. Richardson - Philadelphia, PA Edward A. Noppel - Philadelphia, PA Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Apr. 02, 1895 Granted: Dec. 03, 1895 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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