US PATENT SUBCLASS 381 / FOR 133
.~ Ear insert (381/68.6)

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

FOR 127  DF  HEARING AIDS, ELECTRICAL (381/68) {15}
FOR 133.~ Ear insert (381/68.6)

DEFINITION

Classification: 381/FOR.133

Ear insert:

Subject matter which fits entirely within and is completely supported by the user's ear.