US PATENT SUBCLASS 367 / 189
.~ Vibrator-type transmitter

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

140  DF  SIGNAL TRANSDUCERS {4}
189.~ Vibrator-type transmitter {1}
190  DF  .~.~> With feedback control

DEFINITION

Classification: 367/189

Vibrator-type transmitter:

(under subclass 140) Subject matter comprising generators of long trains of periodic acoustic waves.