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US Patent: 1,971,537
Chuck
Patentees: Harry E. Sloan (exact or similar names) - Hartford, CT George A. Highberg (exact or similar names) - West Hartford, CT USPTO Classifications: 279/119, 279/134 Tool Categories: metalworking machines : metal lathes : metal lathe chucks Assignees: Cushman Chuck Co. - Hartford, CT Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Nov. 20, 1931 Granted: Aug. 28, 1934 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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