Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6955213 | Exhaust gas heat exchanger | Stewart William Leedham | 2005-10-18 |
| 6807955 | Exhaust gas cooler with bypass tube and exhaust gas recirculation valve | Stewart William Leedham | 2004-10-26 |