| 74 / | HD | MACHINE ELEMENT OR MECHANISM |
| 469 | DF | CONTROL LEVER AND LINKAGE SYSTEMS {8} |
| 479.01 | DF | .~ Multiple controlling elements for single controlled element {8} |
| 490.01 | DF | .~.~ Robotic arm {4} |
| 490.05 | ![]() | .~.~.~ Joint between elements {1} |
| 490.06 | DF | .~.~.~.~> Wrist |