| 310 / | HD | ELECTRICAL GENERATOR OR MOTOR STRUCTURE |
| 10 | DF | DYNAMOELECTRIC {5} |
| 40 R | DF | .~ Rotary {28} |
| 254 | ![]() | .~.~ Stator structure {4} |
| 255 | DF | .~.~.~> For railway-type machines |
| 256 | DF | .~.~.~> Stray field flux loss prevention |
| 257 | DF | .~.~.~> Interfitting or claw-tooth stators |
| 258 | DF | .~.~.~> Frame and core type {2} |