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US Patent: 1,835,979
Three-Pump Hydraulic System
Patentees: Hans Ernst (exact or similar names) - Cincinnati, Hamilton County, OH Lester F. Nenninger (exact or similar names) - Cincinnati, Hamilton County, OH USPTO Classifications: 137/493.2, 60/429, 60/430, 60/461, 60/475 Tool Categories: metalworking machines : metalworking machine mechanisms : hydraulic apparatus Assignees: Cincinnati Milling Machine Co. - Cincinnati, Hamilton County, OH Manufacturer: Cincinnati Milling Machine Co. - Cincinnati, Hamilton County, OH Witnesses: Unknown	Patent Dates: Applied: May 21, 1929 Granted: Dec. 08, 1931 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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