| 313 / | HD | ELECTRIC LAMP AND DISCHARGE DEVICES |
| 364 | DF | CATHODE RAY TUBE {11} |
| 365 | DF | .~ Image pickup tube {6} |
| 373 | | .~.~ With photoemissive cathode {8} |
| 374 | DF | .~.~.~> Mosaic |
| 375 | DF | .~.~.~> Plural photoemissive layers |
| 376 | DF | .~.~.~> With target {2} |
| 379 | DF | .~.~.~> Secondary electron emissive |
| 380 | DF | .~.~.~> Special ray sensitive |
| 381 | DF | .~.~.~> Image dissector |
| 382 | DF | .~.~.~> Focusing |
| 383 | DF | .~.~.~> Electrode or electrode support |