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US Patent: 2,832,197
Pressure regulating apparatus for a hydraulic control system
Patentees: Carl L. Sadler (exact or similar names) - Rockford, IL George H. Hermanson (exact or similar names) - Rockford, IL Robert H. Eisengrein (exact or similar names) - Rockford, IL USPTO Classifications: 60/404, 60/443 Tool Categories: Assignees: Sundstrand Machine Tool Co. - Rockford, IL Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Dec. 04, 1951 Granted: Apr. 29, 1958 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin

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