US PATENT SUBCLASS 381 / 71.4
.~ Within cabin or compartment of vehicle

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

71.1  DF  ACOUSTICAL NOISE OR SOUND CANCELLATION {7}
71.4.~ Within cabin or compartment of vehicle

DEFINITION

Classification: 381/71.4

Within cabin or compartment of vehicle:

(under subclass 71.1) Subject matter wherein the noise cancellation system cancels noise within a humanly occupied space of an aircraft, automobile, etc.

SEE OR SEARCH THIS CLASS, SUBCLASS:

86, for electrical audio systems combined with vehicles.