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US Patent: 620,030
Traction Engine
Patentee: John McFarion Hamilton (exact or similar names) - Davis City, Decatur County, IA USPTO Classifications: 180/233, 180/254, 180/38, 180/905, 280/93.514, 74/607 Tool Categories: propulsion and energy : steam apparatus : steam traction engines Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Sep. 08, 1898 Granted: Feb. 21, 1899 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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