327 / | HD | MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS |
100 | DF | SIGNAL CONVERTING, SHAPING, OR GENERATING {29} |
231 | DF | .~ Phase shift by less than period of input {7} |
258 | DF | .~.~ Multiple outputs {1} |
259 | .~.~.~ Non-overlapping |