| 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 | DF | .~.~ Bilateral transistor {1} |
| 426 | | .~.~.~ Plural |