| 313 / | HD | ELECTRIC LAMP AND DISCHARGE DEVICES |
| 238 | DF | WITH SUPPORT AND/OR SPACING STRUCTURE FOR ELECTRODE AND/OR SHIELD {9} |
| 243 | DF | .~ For plural electrodes of discharge device {3} |
| 244 | DF | .~.~ Envelope supports or forms electrode {5} |
| 249 | ![]() | .~.~.~ Elongated envelope with electrodes spaced along length {2} |
| 250 | DF | .~.~.~.~> With spacer between electrodes or electrode supports |
| 251 | DF | .~.~.~.~> Plural electrodes supported along the length of a wire, rod, or tube |