318 / | HD | ELECTRICITY: MOTIVE POWER SYSTEMS |
445 | DF | AUTOMATIC AND/OR WITH TIME-DELAY MEANS (E.G., AUTOMATIC STARTING AND/OR STOPPING) {20} |
452 | DF | .~ Plural, diverse conditions or with time-delay means {1} |
453 | .~.~ Electrical condition {1} | |
454 | DF | .~.~.~> Plural, diverse electrical conditions {1} |