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US Patent: 3,273,182
Feed Control Device to Feed Tool Spindle at Rate of Tool Advance
Patentee: David I. McDonald (exact or similar names) - Cincinnati, OH USPTO Classifications: 318/571, 408/10, 408/3, 409/122, 470/164, 470/176, 82/143 Tool Categories: metalworking machines : machine tool controls metalworking machines : milling machines Assignees: Cincinnati Milling Machine Co. - Cincinnati, OH Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Mar. 06, 1961 Granted: Sep. 20, 1966 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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