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US Patent: 1,719,693
Variable Displacement Pump
Patentee: Hans Ernst (exact or similar names) - Cincinnati, Hamilton County, OH USPTO Classifications: 409/64, 417/429, 417/456, 417/486, 417/518, 417/529, 417/530 Tool Categories: industrial machines : pumps : hydraulic pumps Assignees: Cincinnati Milling Machine Co. - Cincinnati, Hamilton County, OH Manufacturer: Cincinnati Milling Machine Co. - Cincinnati, Hamilton County, OH Witnesses: Unknown	Patent Dates: Applied: Sep. 15, 1927 Granted: Jul. 02, 1929 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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