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US Patent: 397,976
Road Engine
Patentee: Riley Robison Doan (exact or similar names) - Sacramento, CA USPTO Classifications: 180/212, 180/215, 180/263, 280/92, 464/159 Tool Categories: propulsion and energy : steam apparatus : steam road engines Assignees: Riley Robison Doan - Sacramento, CA John H. Roberts - Sacramento, CA Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Oct. 11, 1888 Granted: Feb. 19, 1889 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Roberts & Doan Co.

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