US PATENT SUBCLASS 352 / 10
.~.~ Plural sound transducers selectively operable

Current as of: June, 1999
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352 /   HD   OPTICS: MOTION PICTURES

1  DF  WITH SOUND ACCOMPANIMENT {12}
6  DF  .~ Selectively operable plural records, recorders or reproducers {4}
10.~.~ Plural sound transducers selectively operable

DEFINITION

Classification: 352/10

(under subclass 6) Subject matter which comprises means to selectively activate one of a plurality of sound transducers or picture recording or reproducing elements of a picture and sound recorder or reproducer.