| 3201729 | Electromagnetic device with potted coil | |||
| 2608610 | Transformer | |||
| 2548239 | Core structure for electromagnets | |||
| 2483815 | Electrical plug and jack connection | |||
| 2441047 | Transformer spark plug | |||
| 2158613 | High frequency inductance coil | |||
| 1731993 | Ignition-coil lock |