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US Patent: 597,558
Chuck
Patentee: James A. Howarth (exact or similar names) - New Haven, New Haven County, CT USPTO Classifications: 279/116 Tool Categories: metalworking machines : metal lathes : metal lathe chucks Assignees: Hoggson & Pettis Mfg. Co. - New Haven, New Haven County, CT Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Aug. 23, 1897 Granted: Jan. 18, 1898 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Hoggson & Pettis Manufacturing Co.

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