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US Patent: 842,840
Traction Engine
Patentee: William N. Springer (exact or similar names) - Peoria, IL USPTO Classifications: 110/177, 180/40 Tool Categories: propulsion and energy : steam apparatus : steam traction engines Assignees: Avery Manufacturing Co. - Peoria, IL Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Mar. 08, 1906 Granted: Jan. 29, 1907 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Avery Manufacturing Co.

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