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US Patent: 2,759,733
Expansible Collet
Patentee: Harry E. Sloan (exact or similar names) - Hartford, Hartford County, CT USPTO Classifications: 279/2.03, 279/2.12, 72/393 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: Aug. 21, 1951 Granted: Aug. 21, 1956 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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