US PATENT SUBCLASS 381 / 425
.~.~.~.~ Honeycomb

Current as of: June, 1999
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381 /   HD   ELECTRICAL AUDIO SIGNAL PROCESSING SYSTEMS AND DEVICES

150  DF  ELECTRO-ACOUSTIC AUDIO TRANSDUCER {18}
396  DF  .~ Electromagnetic (e.g., dyynamic) {8}
423  DF  .~.~ Specified diaphragm shape or structure {6}
424  DF  .~.~.~ Plural portions or sections {1}
425.~.~.~.~ Honeycomb

DEFINITION

Classification: 381/425

Honeycomb:

(under subclass 424) Subject matter in which the diaphragm is composed of two or more sheets or layers of material connected with a corrugated, web-like structure.