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US Patent: 482,212
Grinding Fixture
Patentee: William W. Tucker (exact or similar names) - Hartford, Hartford County, CT USPTO Classifications: 142/49, 279/53, 451/437 Tool Categories: metalworking machines : grinders : grinding fixtures metalworking machines : metal lathes : metal lathe accessories and attachments Assignees: None Manufacturer: Pratt & Whitney Co. - Hartford, Hartford County, CT Witnesses: Francis H. Richards Henry L. Reckard H. Mallner	Patent Dates: Applied: Feb. 29, 1892 Granted: Sep. 06, 1892 Patent Pictures: [ 1 | 2 | 3 ] USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Pratt, Whitney & Co.

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