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US Patent: 249,214
Combined Gas, Air and Steam Rotary Engine
Patentee: William H. Wigmore (exact or similar names) - Philadelphia, PA USPTO Classifications: 123/216, 123/223, 123/25B, 123/25R, 418/225, 418/266, 60/39.54 Tool Categories: propulsion and energy : steam apparatus : rotary steam engines Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Apr. 23, 1881 Granted: Nov. 08, 1881 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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