| 359 / | HD | OPTICS: SYSTEMS (INCLUDING COMMUNICATION) AND ELEMENTS |
| 515 | DF | SIGNAL REFLECTOR {11} |
| 534 | DF | .~ Including a curved refracting surface {4} |
| 543 | ![]() | .~.~ With individual reflector element mount {2} |
| 544 | DF | .~.~.~> Including a snap, spring clip, or spring retainer |
| 545 | DF | .~.~.~> Including a threaded member |