315 / | HD | ELECTRIC LAMP AND DISCHARGE DEVICES: SYSTEMS |
1 | DF | CATHODE RAY TUBE CIRCUITS {11} |
364 | DF | .~ Cathode-ray deflections circuits {16} |
368.11 | DF | .~.~ Including color convergence control {8} |
368.15 | DF | .~.~.~ Including electrostatic element (e.g., electrode, lens, etc.) {1} |
368.16 | .~.~.~.~ Offset apertures in plural sequential electrodes |