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US Patent: 460,375
Traction Engine
Patentees: Charles Higgins (exact or similar names) - Clay City, Clay County, IL John Gregory (exact or similar names) - Clay City, Clay County, IL USPTO Classifications: 474/86 Tool Categories: propulsion and energy : steam apparatus : steam traction engines : traction engine propulsion components Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: May 25, 1891 Granted: Sep. 29, 1891 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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