US PATENT SUBCLASS 367 / 142
.~.~ Exclusive-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}
141  DF  .~ Underwater type {15}
142.~.~ Exclusive-type transmitter {6}
143  DF  .~.~.~> Hydraulically driven vibrator
144  DF  .~.~.~> Air guns
145  DF  .~.~.~> Explosives
146  DF  .~.~.~> Implosion devices
147  DF  .~.~.~> Spark discharge devices
148  DF  .~.~.~> Electrically driven underwater bells or sirens

DEFINITION

Classification: 367/142

Exclusive-type transmitter:

(under subclass 141) Subject matter comprising transducers which are only capable of converting electric signals into acoustic waves.

(1) Note. The subject matter of this subclass type is distinguished from the type of transducer which is capable of converting electric signals into acoustic waves and vice versa. Such transducers are excluded from this subclass and the subclasses indented hereunder.