318 / | HD | ELECTRICITY: MOTIVE POWER SYSTEMS |
140 | DF | GENERATOR-FED MOTOR SYSTEMS HAVING GENERATOR CONTROL {9} |
141 | DF | .~ Automatic generator control and/or with time-delay means {5} |
142 | DF | .~.~ Responsive to diverse conditions or with time-delay means {1} |
143 | .~.~.~ Plural electrical conditions |