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US Patent: 2,576,114
Machine Tool Work Holder
Patentees: Robert L. Hibbard, deceased (Estate of) (exact or similar names) - Bellevue, Allegheny County, PA Stewart C. Hibbard, Executor (exact or similar names) - Ross Township, Allegheny County, PA Robert L. Hibbard, Executor, Jr. (exact or similar names) - Bellevue, Allegheny County, PA Hays M. Junkin, Executor (exact or similar names) - Bellevue, Allegheny County, PA USPTO Classifications: 226/162, 279/66, 408/13, 470/176, 470/66 Tool Categories: metalworking machines : metalworking machine mechanisms : workpiece changers and storage mechanisms Assignees: Robert L. Hibbard, deceased (Estate of) - Bellevue, Allegheny County, PA William K. Stamets - Mars, Butler County, PA Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Apr. 03, 1945 Granted: Nov. 27, 1951 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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