US PATENT SUBCLASS 367 / 97
.~.~ Receiver system

Current as of: June, 1999
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367 /   HD   COMMUNICATIONS, ELECTRICAL: ACOUSTIC WAVE SYSTEMS AND DEVICES

87  DF  ECHO SYSTEMS {6}
95  DF  .~ Returned signal used for control {2}
97.~.~ Receiver system {1}
98  DF  .~.~.~> Automatic gain or threshold control

DEFINITION

Classification: 367/97

Receiver system:

(under subclass 95) Subject matter in which the device is a portion of the acoustic wave receiver itself.