Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4873958 | Engine ignition timing control system | — | 1989-10-17 |
| 4869221 | Engine ignition timing control system | — | 1989-09-26 |
| 4829440 | Learning control system for controlling an automotive engine | — | 1989-05-09 |
| 4825829 | Idle speed control system for an automotive engine | — | 1989-05-02 |