Acoustic transducers for acoustic position sensing apparatus

Adapter for mounting a microphone flush with the external surfac

Adaptive quantizer for acoustic binary information transmission

Apparatus for underwater image-recording as by sonar-triggered e

Borehole televiewer system using multiple transducer subsystems

Buoy system for vertical ocean profiling

Camera with a voice command responsive system

Circumferential acoustical detector

Computer system module assembly

Concentric fiber optical transducer

Control panel for electronic instruments

Determination of stress characteristics of earth formations

Device and method for seismic drill hole measuring

Diaphragm design for a bender type acoustic sensor

Electrical component mounting apparatus with isolated conductors

Evanescent fiber optic pressure sensor apparatus

Extended fiber optic sensor using birefringent fibers

High density power module incorporating passive components...

Hydraulic impedance test method

Leadless integrated circuit package