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US Patent: 212,507
Improvement in spoke-tenoning machines
Patentee: Ammi J. Roberts (exact or similar names) - Clinton, WI USPTO Classifications: 144/206 Tool Categories: trade specific : wheelwright Assignees: None Manufacturer: Not known to have been produced Witnesses: Charles H. Stewart H. S. Wooster	Patent Dates: Applied: Nov. 12, 1878 Granted: Feb. 18, 1879 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin

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