US PATENT SUBCLASS 381 / 151
.~ Body contact wave transfer (e.g., bone conduction earphone, larynx microphone)

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}
151.~ Body contact wave transfer (e.g., bone conduction earphone, larynx microphone)

DEFINITION

Classification: 381/151

Body contact wave transfer (e.g., bone-conduction earphone, larynx microphone):

(under subclass 150) Subject matter wherein sound vibrations are obtained from or imparted to a portion of a human body in direct contact with a vibrating component of an electroacoustical transducer.

SEE OR SEARCH THIS CLASS, SUBCLASS:

68.3, for similar subject matter used in a hearing aid.