Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5924404 | Cylinder-specific spark ignition control system for direct fuel injected two-stroke engine | Mark A. Ruman | 1999-07-20 |
| 5913302 | Ignition coil dwell time control system | Mark A. Ruman | 1999-06-22 |
| 4960398 | Stern drive marine propulsion system with automatic trim control and exhaust control | — | 1990-10-02 |