US PATENT SUBCLASS 367 / 175
.~.~.~ Diaphragm with electric driving coil

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}
174  DF  .~.~ Transducer with diaphragm {1}
175.~.~.~ Diaphragm with electric driving coil

DEFINITION

Classification: 367/175

Diaphragm with electric driving coil:

(under subclass 174) Subject matter wherein the diaphragm is driven by an electromagnetic coil.