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US Patent: 236,771
Steam Plow
Patentee: Ephraim Brown (exact or similar names) - Lowell, Middlesex County, MA USPTO Classifications: 172/100, 172/103, 172/39, 172/68 Tool Categories: propulsion and energy : steam apparatus : steam plows Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Apr. 08, 1880 Granted: Jan. 18, 1881 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Ephraim Brown

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