72305939
Aug 26, 1968
Dec 23, 1969
SERVO SYSTEMS AND COMPONENTS THEREOF, INCLUDING SERVO VALVES, SERVO AMPLIFIERS, PROPORTIONAL SOLENOID VALVES, OPERATIONAL AMPLIFIERS, FLUID PRESSURE ACTUATORS, ELECTRO-MECHANICAL TRANSDUCERS, AND PARTS OF THE FOREGOING; AND ELECTRONIC CIRCUITS-NAMELY, POWER SUPPLY CIRCUITS, VOLTAGE REGULATOR CIRCUITS, EXCITER DEMODULATOR CIRCUITS, LIMIT DETECTOR CIRCUITS, AND RELAY AND DIGITAL LOGIC CIRCUITS
Housewares and Glass