Improvements in oleodinamic servomands for the remote control of a mobile motor element through a leverage servomand. (Machine-translation by Google Translate, not legally binding)
GB1436272A
Hydraulic control apparatus
DE2359748A1
Improvement of hydraulic fluid servo drives - has balancing pressure adjustable so that pressure variations allow no lever movement
ES400740A1
Gear pump with balanced side sealing bushes
ES398235A1
Combined pressure relief and vacuum relief valve
US3635244A
Valve for distributing fluid to a system of fluid-actuated machines
