| 434 / | HD | EDUCATION AND DEMONSTRATION |
| 1 | DF | DETECTION OR RANGE DETERMINATION OF DISTANT OBJECT BY APPARATUS USING SENSOR OF ELECTROMAGNETIC OR SOUND ENERGY {2} |
| 2 | | .~ Radar {3} |
| 3 | DF | .~.~> Cathode ray screen display simulated by light means (e.g., light spot projected onto screen, etc.) |
| 4 | DF | .~.~> Optical means (e.g., image projector, etc.) or light or sound sensor (e.g., television camera, microphone, etc.) included in a simulator |
| 5 | DF | .~.~> Interference simulation |