| 313 / | HD | ELECTRIC LAMP AND DISCHARGE DEVICES |
| 483 | DF | WITH LUMINESCENT SOLID OR LIQUID MATERIAL {4} |
| 484 | DF | .~ With gaseous discharge medium {1} |
| 485 | DF | .~.~ Phosphor on envelope wall {6} |
| 491 | | .~.~.~ Electrode structure or material {1} |
| 492 | DF | .~.~.~.~> With shield or additional electrode |