US PATENT SUBCLASS 367 / 146
.~.~.~ Implosion devices

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  DF  .~.~ Exclusive-type transmitter {6}
146.~.~.~ Implosion devices

DEFINITION

Classification: 367/146

Implosive devices:

(under subclass 142) Subject matter which are submersed in water and produce acoustic waves therein by abruptly reducing their volume.