US PATENT SUBCLASS 352 / 31
.~ Separate picture and sound carrier systems

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

1  DF  WITH SOUND ACCOMPANIMENT {12}
31.~ Separate picture and sound carrier systems {1}
32  DF  .~.~> Picture strip and groove-type sound disc or cylinder {1}

DEFINITION

Classification: 352/31

(under subclass 1) Subject matter in which the picture record and the sound record are on separate carriers.