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US5677487A
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Method and apparatus for measuring acceleration or mechanical forces
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DK146695A
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Process for the preparation of germanium doped glasses and use of the method
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DK117494A
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Circular sound source
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AU7530994A
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An apparatus for detecting the malfunctioning of an accelerometer
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DK76293D0
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displacement transducer
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DK41593D0
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Method and coupling to reduce the harmonic distortion of a capacitive transducer
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DK123892D0
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Shear type piezoelectric accelerometer
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DK105091D0
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Method and apparatus for monitoring acoustic transducers
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DK262489D0
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probe Microphone
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FR2592949A1
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Electromechanical measurement system for conversion of low movements into proportional electric signals, especially in the form of a rugosimeter
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DK340686D0
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Pressure gradient
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DK247786D0
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Photoacustic gas analyzer
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DK247686D0
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Device for determining the concentration of a paramagnetic gas when measuring gas pressure when pressing an ac magnet field
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DK212586D0
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Procedure for preparing an ultra sound truck
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DK431085D0
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Acoustic calibration device
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DK285185D0
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Procedure for calibrating an anemometer and apparatus for exercising the procedure
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DK235585D0
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Device for pressure microphones to improve these low frequency characteristics
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DK328583D0
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Device for pressure microphones to improve these low frequency characteristics
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DK186083D0
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Acoustic connectors
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DK502481A
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Capacity transducer
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