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US Patent: 3,089,293
Automatic Control Mechanism for Roll Grinder
Patentees: Walter A. Hoier (exact or similar names) - Cincinnati, Hamilton County, OH George W. Marshall (exact or similar names) - Cincinnati, Hamilton County, OH Milton V. Waters (exact or similar names) - Silverton, Hamilton County, OH USPTO Classifications: 451/142, 451/21 Tool Categories: metalworking machines : grinders : roll grinding machines metalworking machines : machine tool controls Assignees: Cincinnati Milling Machine Co. - Cincinnati, Hamilton County, OH Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Oct. 05, 1961 Granted: May 14, 1963 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Cincinnati Milling Machine Co.

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