Device for producing soundwaves in water

Device for seismic emission in an underground formation and...

Device for seismic exploration

Device for sensing seismic and acoustic vibrations

Diagnostic system and method for transducers

Diamagnetic current response transducer for sensing pressure...

Diaphragm cup for an ultrasonic transducer

Diaphragm for use with an electro-acoustic transducer and method

DIFAR sensor

Digital air gun source controller apparatus and control method

Digital drive and phase-lock for seismic vibrators

Digital transducer

Directional electro-acoustic transducers comprising a sealed sel

Directional flextensional transducer

Directional hydrophone suitable for flush mounting

Directional modular linear hydrophonic antenna

Directional sound signaling device

Directional transducer

Directional underwater acoustic pulse source

Disappearing baffle for sonar arrays