Oscillatory circuit for ultrasonic cleaning apparatus
Piezoelectric transducer assembly
Piezoelectrically excitable resonance system
Plural-amplitude vibration assembly
Process and transducer for transmitting wideband low...
Process for preparing a nonwoven web
Pulsating vibration air generation means
Pvdf/trfe piezoelectric transducer
Quartz resonator pressure transducer
Rebound-effector
Regulating device for pneumatic vibrators
Resonator exhibiting uniform motional output
Rodent repellor
Rotary vibrator
Rotating electric motor system capable of vibrating and...
Seismic pulse generator
Sonic generator
Sonic transducer and drive circuit
Subsonic sound generator
Surface acoustic wave transducer having selected reflectivity