Acceleration sensor

Accelerometer for blast monitoring

Accelerometer sensor noise reduction method and means

Acoustic detection system

Acoustic ground vibration detector

Acoustic transducer

Acoustic transducer with improved electrode spacing

Acoustic transducer with improved electrode spacing

Acoustic transducer with improved low frequency response

Aperture control and apodization in a micro-machined...

Apparatus and method for detecting seismic waves

Apparatus for measuring the intensity of a seismic shock

Apparatus for positioning geophones in shallow holes

Arrangement for determining the distance of objects

Array of capacitive micromachined ultrasonic transducer...

Capacitance-type ultrasonic transducer

Capacitive micromachined ultrasonic transducer arrays with...

Capacitive sound transducer

Capacitive transducer system and method

Capacitive ultrasonic transducer and method of fabricating...