| 417 / | HD | PUMPS |
| 1 | DF | CONDITION RESPONSIVE CONTROL OF PUMP DRIVE MOTOR {22} |
| 2 | DF | .~ Plural pumps having separate drive motors, supply sources, or delivery destinations {1} |
| 3 | DF | .~.~ Pumps in parallel flow paths with common inflow or outflow {1} |
| 4 | DF | .~.~.~ Having means sensing condition in common inflow or outflow line {1} |
| 5 | DF | .~.~.~.~ With control of plural pump drive motors {2} |
| 7 | DF | .~.~.~.~.~ Sequential starting or stopping of pumps {1} |
| 8 | | .~.~.~.~.~.~ Alternating sequences |