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US Patent: 129,984
Improvement in Traction-Engines
Patentee: Dwight C. Pierce (exact or similar names) - Portage, Kalamazoo County, MI USPTO Classifications: 180/8.1, 254/327, 254/328, 280/92 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: Granted: Jul. 30, 1872 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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