US PATENT SUBCLASS 181 / 137
.~.~ Receiver

Current as of: June, 1999
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181 /   HD   ACOUSTICS

126  DF  ANATOMIC OR PROSTHETIC RELATION {2}
128  DF  .~ Ear and mouth {4}
137.~.~ Receiver

DEFINITION

Classification: 181/137

(under subclass 129) Subject matter having a sensing element only.