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US Patent: 2,728,268
Concavity Generating Milling Machine
Patentees: Richard N. Clifton (exact or similar names) - Cincinnati, Hamilton County, OH Milton V. Waters (exact or similar names) - Cincinnati, Hamilton County, OH Peter F. Ochotschinsky (exact or similar names) - Cincinnati, Hamilton County, OH USPTO Classifications: 269/234, 29/33P, 409/186, 409/197, 409/199, 409/203 Tool Categories: metalworking machines : milling machines Assignees: Cincinnati Milling Machine Co. - Cincinnati, Hamilton County, OH Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Jul. 21, 1951 Granted: Dec. 27, 1955 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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