US PATENT SUBCLASS 381 / 92
DIRECTIVE CIRCUITS FOR MICROPHONES


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

92DIRECTIVE CIRCUITS FOR MICROPHONES


DEFINITION

Classification: 381/92

DIRECTIVE CIRCUITS FOR MICROPHONES:

(under the class definition) Subject matter including a circuit for imparting directional pickup characteristics to microphones.

SEE OR SEARCH THIS CLASS, SUBCLASS:

155, for a directional microphone, per se.