Sonic instrumentation apparatus and method for cement bond...
Sonic transmitters
Sound amplification system having a submersible microphone
Sound detection
Sound focusing device
Sound generating transducer
Sound generation device
Sound or ultrasound sensor
Sounder
Source array for use in marine seismic exploration
Source tunable array for ground roll reduction
Sparker source systems
Stabilizer for geophone
Stable fiber-optic hydrophone
Stack driven flexural disc transducer
State switched acoustic transducer
Static dissipating data cable and seismic apparatus
Steerable acoustic transducer
Steerable thermoacoustic array
Stepped multiply resonant wideband transducer apparatus