327 / | HD | MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS |
365 | DF | GATING (I.E., SWITCHING INPUT TO OUTPUT) {12} |
419 | DF | .~ Utilizing three or more electrode solid-state device {7} |
425 | .~.~ Bilateral transistor {1} | |
426 | DF | .~.~.~> Plural |