Pressure wave fiber optic transducer cable

Pressure-compensated acceleration-insensitive hydrophone

Pressure-compensated optical acoustic sensor

Printed-circuit disc for stringing geophones

Process and apparatus for analyzing and controlling energy trans

Process and device to reduce the resonant frequency of the cavit

Process and electro-acoustic transducers for transmitting low-fr

Process and transducer for emitting wide band and low frequency

Process and transducers submerged in a fluid for emitting low fr

Process for producing the output surface of a focused ultrasonic

Process to increase the power of the low frequency electro acous

Protective drive-level limiter for an electro-hydraulic vibrator

Proximity sensor utilizing polymer piezoelectric film

Pulse sampled optical fiber hydrophone array (U)

Pulsed combustion acoustic wave generator

Purging and expansion mechanism

Push-pull tonpilz transducer

Pyro-acoustic generator for protecting submarines and...

Quiet geophysical construction practices for reduced diameter st

Rare earth flextensional transducer