Stress wave generator

Submergible marine seismic source

Swept impact seismic technique and apparatus

Swinging-weight vibrator for seismic exploration

System and method for ignition of a gaseous or dispersed...

System for imparting compressional and shear waves into the eart

System for imparting mechanical impulse energy to the ground

System for imparting mechanical impulse energy to the ground

T-bar base plate for a seismic signal transducer

Target plate for impulse-type acoustic signal generator

Telescoping actuator for impulsive seismic source

Telescoping tube omni-directional shear wave vibrator

Torsional shear wave generator

Tracking bandpass filter for conditioning vibrator accelerometer

Transducer for inducing seismic signals into an elastic medium

Transportable hydraulic seismic transducer

Transporter for low energy seismic source

Tubular shear wave source

Tunable marine seismic source

Tunable marine seismic source