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US Patent: 2,484,910
Variable Speed Mechanism
Patentees: Millard Romaine (exact or similar names) - Cincinnati, Hamilton County, OH Edgar D. Vancil (exact or similar names) - Cincinnati, Hamilton County, OH USPTO Classifications: 474/72, 474/77, 74/333 Tool Categories: metalworking machines : metalworking machine mechanisms : metalworking variable speed mechanisms Assignees: Cincinnati Milling Machine Co. - Cincinnati, Hamilton County, OH Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Jan. 11, 1947 Granted: Oct. 18, 1949 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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