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US Patent: 141,264
Improvement in hub-boring machines
Patentees: James Duncan (exact or similar names) - Buchanan, MI William Henry Arnold (exact or similar names) - Buchanan, MI USPTO Classifications: 408/147, 408/99 Tool Categories: trade specific : wheelwright Assignees: None Manufacturer: Not known to have been produced Witnesses: George A. Harris M. H. Smith	Patent Dates: Applied: May 05, 1873 Granted: Jul. 29, 1873 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin

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