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} |
368.18 | DF | .~.~.~ Including specified waveform generating circuitry {2} |
368.19 | .~.~.~.~ By nonlinear device (e.g., square law device, diode, etc.) |