313 / | HD | ELECTRIC LAMP AND DISCHARGE DEVICES |
364 | DF | CATHODE RAY TUBE {11} |
421 | DF | .~ Beam deflecting means {7} |
426 | DF | .~.~ Plural {2} |
432 | .~.~.~ Electrostatic {5} | |
433 | DF | .~.~.~.~> Magnetic |
434 | DF | .~.~.~.~> Nonparallel or asymmetric {1} |
436 | DF | .~.~.~.~> Enclosed or overlapping |
437 | DF | .~.~.~.~> With distortion correction |
438 | DF | .~.~.~.~> With support |