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US Patent: 2,697,612
Lightweight chuck
Patentee: Harry E. Sloan (exact or similar names) - Hartford, CT USPTO Classifications: 279/121, 279/123, 279/158 Tool Categories: metalworking machines : metal lathes : metal lathe chucks Assignees: Cushman Chuck Co. - Hartford, CT Manufacturer: Cushman Chuck Co. - Hartford, CT Witnesses: Unknown	Patent Dates: Applied: Apr. 01, 1950 Granted: Dec. 21, 1954 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Cushman Chuck Co.
Description: This patent date was seen on a Cushman "Wedge-Operated" air chuck.

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