318 / | HD | ELECTRICITY: MOTIVE POWER SYSTEMS |
34 | DF | PLURAL, DIVERSE OR DIVERSELY CONTROLLED ELECTRIC MOTORS {22} |
53 | DF | .~ Plural, diverse motor controls {4} |
59 | .~.~ Running-speed control {3} | |
60 | DF | .~.~.~> And braking |
61 | DF | .~.~.~> And acceleration control |
62 | DF | .~.~.~> And automatic starting and/or stopping and/or with time delay |