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US Patent: 226,370
Drill Chuck
Patentee: Alonzo L. Sweet (exact or similar names) - Norwich, New London County, CT USPTO Classifications: 279/61 Tool Categories: metalworking machines : metal lathes : metal lathe chucks Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Jan. 14, 1880 Granted: Apr. 06, 1880 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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