| 315 / | HD | ELECTRIC LAMP AND DISCHARGE DEVICES: SYSTEMS |
| 1 | DF | CATHODE RAY TUBE CIRCUITS {11} |
| 3 | DF | .~ Combined cathode ray tube and circuit element structure {2} |
| 4 | DF | .~.~ Inductor or distributed parameter-type inductive structure {2} |
| 5 | DF | .~.~.~ Ray passes in or through a hollow distributed parameter device {15} |
| 5.39 | DF | .~.~.~.~ Plural hollow devices {6} |
| 5.42 | ![]() | .~.~.~.~.~ Devices excited to accelerate the ray across their gaps; e.g., synchrotrons |