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US Patent: 2,289,110
Milling Speed Calculator
Patentees: Hans Ernst (exact or similar names) - Cincinnati, Hamilton County, OH Raymond D. Wortendyke (exact or similar names) - Cincinnati, Hamilton County, OH USPTO Classifications: 235/84 Tool Categories: metalworking tools : machinist tools : speed and feed calculators Assignees: Cincinnati Milling Machine Co. - Cincinnati, Hamilton County, OH Manufacturer: Cincinnati Milling Machine Co. - Cincinnati, Hamilton County, OH Witnesses: Unknown	Patent Dates: Applied: Aug. 11, 1941 Granted: Jul. 07, 1942 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.
Description: This patent number was seen on a Cincinnati Milling Machine Co. patent plate 4FV-101.

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