315 / | HD | ELECTRIC LAMP AND DISCHARGE DEVICES: SYSTEMS |
1 | DF | CATHODE RAY TUBE CIRCUITS {11} |
364 | DF | .~ Cathode-ray deflections circuits {16} |
372 | .~.~ For cathode-ray tube having plural targets {2} | |
373 | DF | .~.~.~> Targets radially about cathode |
374 | DF | .~.~.~> Targets in single plane |