| 310 / | HD | ELECTRICAL GENERATOR OR MOTOR STRUCTURE |
| 10 | DF | DYNAMOELECTRIC {5} |
| 40 R | DF | .~ Rotary {28} |
| 219 | DF | .~.~ Current collectors {7} |
| 231 | DF | .~.~.~ Rotary structure {2} |
| 233 | | .~.~.~.~ Commutators {4} |
| 234 | DF | .~.~.~.~.~> Winding connectors |
| 235 | DF | .~.~.~.~.~> Molded support |
| 236 | DF | .~.~.~.~.~> Cylindrical or drum |
| 237 | DF | .~.~.~.~.~> Disc |