| 352 / | HD | OPTICS: MOTION PICTURES | 
| 1 | DF | WITH SOUND ACCOMPANIMENT {12} | 
| 31 | DF | .~ Separate picture and sound carrier systems {1} | 
| 32 |  | .~.~ Picture strip and groove-type sound disc or cylinder {1} | 
| 33 | DF | .~.~.~> Interconnecting drive permits relative position adjustment |