Ultrasonic fluid counter for attenuating parasitic ultrasonic waves
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United States of America Patent
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Oct 19, 1999
Grant Date -
N/A
app pub date -
Jan 23, 1998
filing date -
Aug 4, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention concerns an ultrasonic fluid counter including at least two ultrasonic transducers collectively defining an ultrasonic measuring path and emitting and receiving ultrasonic waves in the fluid along said ultrasonic measuring path according to at least one ultrasonic frequency, wherein attenuation means for attenuating parasitic ultrasonic waves generated outside said fluid counter and transmitted by the fluid according to the ultrasonic frequency or frequencies are associated with the fluid counter.
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