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US Patent: 2,528,442
Power Chuck
Patentee: Lorenz Albert Leifer (exact or similar names) - Madison, Dane County, WI USPTO Classifications: 279/114, 279/134, 279/137, 279/4.12 Tool Categories: metalworking machines : metal lathes : metal lathe chucks Assignees: Gisholt Machine Co. - Madison, Dane County, WI Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Mar. 15, 1945 Granted: Oct. 31, 1950 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Gisholt Machine Co.

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