Magnetic coupler for electroacoustic hydrophones

Magnetohydrodynamic fluid apparatus and method

Magnetohydrodynamic fluid transducer

Magnetohydrodynamic geophone

Magnetoresistive microphone and acoustic sensing devices

Magnetostrictive acoustic transducer

Magnetostrictive pulse generator

Magnetostrictive transducer for logging tool

Marine acoustic gradient sensor

Marine acoustic source

Marine acoustic source

Marine acoustic source

Marine seismic acoustic source

Marine seismic air gun timing

Marine seismic air gun timing

Marine seismic sensor

Marine seismic source

Marine seismic source frame

Marine seismic source towing apparatus and method

Marine seismic streamer cable for providing selectable detector