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US Patent: 608,517
Traction Engine
Patentee: Stephen B. Gray (exact or similar names) - Jacksonville, Morgan County, IL USPTO Classifications: 180/233, 180/255, 180/262, 180/38, 180/6.24, 74/721 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: Feb. 08, 1897 Granted: Aug. 02, 1898 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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