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US Patent: 132,763
Improvement in Watchmakers' Lathes and Chucks
Patentee: Caleb Hopkins (exact or similar names) - Philadelphia, PA USPTO Classifications: 279/8, 82/116, 82/137 Tool Categories: metalworking machines : metal lathes : watchmakers lathes Assignees: None Manufacturer: Not known to have been produced Witnesses: T. L. Borsch Charles N. Dunham	Patent Dates: Granted: Nov. 05, 1872 Antedated: Nov. 02, 1872 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Steve Gosselin

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