| 439 / | HD | ELECTRICAL CONNECTORS |
| 43 | DF | WITH SELECTABLE CIRCUIT, E.G., PLUG BOARD {5} |
| 44 | DF | .~ Planar circuit overlying a second planar circuit, both adapted to be electrically connected {1} |
| 45 | DF | .~.~ Connected by transversely inserted pin {3} |
| 48 | ![]() | .~.~.~ Linear conductors of first surface; linear, normally disposed, conductors in second circuit |