US PATENT SUBCLASS 381 / 172
.~.~ Light modifying

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}
369  DF  .~ Microphone capsule only {10}
172.~.~ Light modifying

DEFINITION

Classification: 381/172

Light modifying:

(under subclass 168) Subject matter for converting an incident sound wave to an audio signal by means of a light modifying element.

SEE OR SEARCH CLASS

455, Telecommunications,

618+, for a transmitter for light wave communication.