327 / | HD | MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS |
100 | DF | SIGNAL CONVERTING, SHAPING, OR GENERATING {29} |
261 | DF | .~ Having specific delay in producing output waveform {7} |
276 | DF | .~.~ Single output with variable or selectable delay {3} |
277 | .~.~.~ Including delay line or charge transfer device |