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US Patent: 2,816,768
Lever operated collet chuck
Patentees: Girard S. Haviland (exact or similar names) - Wethersfield, CT Arthur Merrick Stoner (exact or similar names) - West Hartford, CT USPTO Classifications: 279/50 Tool Categories: metalworking machines : metal lathes : metal lathe chucks Assignees: Jacobs Mfg. Co. - West Hartford, CT Manufacturer: Jacobs Mfg. Co. - West Hartford, CT Witnesses: Unknown	Patent Dates: Applied: Sep. 11, 1956 Granted: Dec. 17, 1957 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Jacobs Mfg. Co.

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