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US Patent: 2,412,499
Machine Tool Vibration Dampener
Patentees: Hans Ernst (exact or similar names) - Cincinnati, Hamilton County, OH Daniel A. Grieb (exact or similar names) - Cincinnati, Hamilton County, OH Michael Field (exact or similar names) - Cincinnati, Hamilton County, OH USPTO Classifications: 188/379, 409/141 Tool Categories: metalworking machines : milling machines 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: Aug. 30, 1944 Granted: Dec. 10, 1946 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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