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US Patent: 143,154
Improvement in machines for threading bolts
Patentee: Merritt Hine (exact or similar names) - New Haven, CT USPTO Classifications: 408/159 Tool Categories: specialty machines : nut or bolt making machines Assignees: None Manufacturer: Dibble & Hine - New Haven, CT Witnesses: A. J. Tibbits J. H. Shumway	Patent Dates: Applied: Jul. 09, 1873 Granted: Sep. 23, 1873 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Dibble & Hine
Description: Improvements to the inventor's patent of 1870-03-29, patent {}.

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