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US Patent: 1,938,780
Power Operated Clutch for Machine Tools
Patentees: Lester F. Nenninger (exact or similar names) - Cincinnati, Hamilton County, OH Bernard Sassen (exact or similar names) - Cincinnati, Hamilton County, OH USPTO Classifications: 192/109F, 192/30W, 192/48.614, 192/85.21, 192/85.24, 192/85.63, 74/333 Tool Categories: metalworking machines : metalworking machine mechanisms : metalworking power transmission Assignees: Cincinnati Milling Machine Co. - Cincinnati, Hamilton County, OH Manufacturer: Cincinnati Milling Machine Co. - Cincinnati, Hamilton County, OH Witnesses: Unknown	Patent Dates: Applied: Dec. 02, 1930 Granted: Dec. 12, 1933 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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