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US Patent: 193,737
Traction Engines
Patentee: Leander Walker (exact or similar names) - Dallas, TX USPTO Classifications: 476/67 Tool Categories: propulsion and energy : steam apparatus : steam traction engines Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Jun. 25, 1877 Granted: Jul. 31, 1877 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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