US PATENT SUBCLASS 367 / 26
.~.~ Threshold set system

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367 /   HD   COMMUNICATIONS, ELECTRICAL: ACOUSTIC WAVE SYSTEMS AND DEVICES

14  DF  SEISMIC PROSPECTING {4}
25  DF  .~ Well logging {6}
26.~.~ Threshold set system

DEFINITION

Classification: 367/26

Threshold set system:

(under subclass 25) Subject matter wherein detected waves are converted to electrical signals having a characteristic (e.g., amplitude, timing) which is compared with a standard to determine the acceptability of the signal by the system.