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US Patent: 2,768,478
Pattern Controlled Cutter Grinder
Patentee: Campbell Ernst Waller (exact or similar names) - Cincinnati, Hamilton County, OH USPTO Classifications: 451/220, 451/239, 451/403 Tool Categories: metalworking machines : grinders : tool grinders Assignees: Cincinnati Milling Machine Co. - Cincinnati, Hamilton County, OH Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: May 31, 1955 Granted: Oct. 30, 1956 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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