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US Patent: 1,776,408
Hitch Mechanism for Tractors
Patentees: William I. Ball (exact or similar names) - La Porte, Laporte County, IN Paul R. Thompson (exact or similar names) - La Porte, Laporte County, IN USPTO Classifications: 172/257, 280/467 Tool Categories: agricultural : tractors Assignees: Advance-Rumely Co. - La Porte, Laporte County, IN Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Jun. 25, 1923 Granted: Sep. 23, 1930 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Advance-Rumely Co.

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