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US Patent: 448,213
Rotary Engine
Patentee: Magnus Peder Elgen (exact or similar names) - St. Paul, Ramsey County, MN USPTO Classifications: 418/144, 418/146, 418/265 Tool Categories: propulsion and energy : steam apparatus : rotary steam engines Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Dec. 16, 1889 Granted: Mar. 17, 1891 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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