FLUID PRESSURE OR FLUID FLOW CONTROLLER

摘要

1,200,472. Fluid-pressure servo systems. KOEHLER-DAYTON Inc. July 26, 1967 [July 26, 1966], No.11595/70, Divided out of 1, 200, 471. Heading G3P. The disclosure corresponds with that of parent Specification 1,200,471, but the claims relate to the supply-and-vent relay valve.