Thermionic converter

Thermoelectric power system

Thin quartz oscillator with support of leads

Toy motor with partial coil rotor

Transducer having enhanced acceleration cancellation characteris

Tuned plate acoustic projector with piezoelectric driver

Ultrasensitive differential relay configuration

Ultrasonic composite devices

Ultrasonic contact-type search unit

Ultrasonic generator drive circuit

Ultrasonic motor-converter systems

Ultrasonic motors and converters

Ultrasonic piezoelectric transducer drive circuit

Ultrasonic signal generator

Ultrasonic signal generators

Ultrasonic transducer with improved transient response and metho

Ultrasonic transducer with laminated coupling wedge

Ultrasonic wave generator

Vacuum electrolysis of quartz

X-cut quartz resonator using non overlaping electrodes