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US Patent: 2,972,357
Hydraulic Rotary Selector Valve
Patentees: Ralph L. Ford (exact or similar names) - Fond Du Lac, Fond Du Lac County, WI Calvin S. Gladoske (exact or similar names) - Fond Du Lac, Fond Du Lac County, WI USPTO Classifications: 137/625.11, 137/625.47, 137/637.3, 251/175, 251/310 Tool Categories: metalworking machines : metalworking machine mechanisms : hydraulic apparatus hardware : valves Assignees: Giddings & Lewis Machine Tool Co. - Fond Du Lac, Fond Du Lac County, WI Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Jun. 03, 1957 Granted: Feb. 21, 1961 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Giddings & Lewis Manufacturing Co.
Description: Claim: This invention relates to a hydraulic control valve and more particularly, a hydraulic rotary selector valve.

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