74 / | HD | MACHINE ELEMENT OR MECHANISM |
469 | DF | CONTROL LEVER AND LINKAGE SYSTEMS {8} |
471 R | DF | .~ Multiple controlled elements {3} |
473.1 | DF | .~.~ Transmission control {11} |
473.16 | .~.~.~ Foot operated {1} | |
473.17 | DF | .~.~.~.~> Multiple foot-operated controls |