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US Patent: 204,430
Rotary Engine
Patentee: Bernard Frese (exact or similar names) - Chicago, Cook County, IL USPTO Classifications: 418/127, 418/260 Tool Categories: propulsion and energy : steam apparatus : rotary steam engines Assignees: Bernard Frese - Chicago, Cook County, IL Henry Lawrence - Chicago, Cook County, IL Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Dec. 08, 1877 Granted: Jun. 04, 1878 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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