US PATENT SUBCLASS 352 / 23
.~.~ With synchronizing indicator

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

1  DF  WITH SOUND ACCOMPANIMENT {12}
12  DF  .~ Picture and sound synchronizing {7}
23.~.~ With synchronizing indicator {1}
24  DF  .~.~.~> On picture and sound records

DEFINITION

Classification: 352/23

(under subclass 12) Subject matter in which there is provision for indicating the time relationship between the sound and picture recording or reproducing means.

SEE OR SEARCH THIS CLASS, SUBCLASS:

170+, for camera and/or projector drive mechanisms with indicating means.