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US Patent: 2,563,970
Power Driven Chuck-Operating Means for Lathes and Other Machines
Patentees: Harry E. Sloan (exact or similar names) - Hartford, Hartford County, CT Harry E. Sloan, Jr. (exact or similar names) - West Hartford, Hartford County, CT Linwood B. Swanson (exact or similar names) - New Britain, Hartford County, CT USPTO Classifications: 279/116, 279/134, 477/5, 74/28 Tool Categories: metalworking machines : metal lathes : metal lathe chucks Assignees: Cushman Chuck Co. - Hartford, Hartford County, CT Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Jul. 27, 1950 Granted: Aug. 14, 1951 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Cushman Chuck Co.

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