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US Patent: 3,222,956
Machine Tool Spindle Mechanism
Patentees: Lewis A. Dever (exact or similar names) - Cincinnati, Hamilton County, OH Lawrence A. Attermeyer (exact or similar names) - Cincinnati, Hamilton County, OH USPTO Classifications: 408/133, 408/137, 408/163, 409/231 Tool Categories: metalworking machines : drilling and boring : vertical boring mills metalworking machines : metalworking machine mechanisms Assignees: Cincinnati Milling Machine Co. - Cincinnati, Hamilton County, OH Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Jul. 14, 1964 Granted: Dec. 14, 1965 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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