Damping device for sonic waveguides

Decoupling ring

Deep ocean wide band acoustic baffle

Deep penetrating focused array

Deep submergence hydrophone

Deep submergence transducer

Deep water surveillance system

Deep water transient sound generator

Deployable hull array system

Deployable sonar array with interconnected transducers operated

Depth alarm for a seismic sensor

Depth finder transducer system

Depth transducer protective assembly

Determining directional propagation attributes of a seismic...

Device for detecting seismic motion

Device for detecting the presence of frost and/or for measuring

Device for firmly holding seismic means, especially sources of s

Device for generating acoustic pulses by implosion, inside a wel

Device for generation of hydrodynamic power

Device for picking up sound waves propagating in water