Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5394901 | Exhaust pressure modulation valve | Derek Thompson | 1995-03-07 |
| 5372109 | Exhaust modulator | Derek Thompson | 1994-12-13 |
| 5113652 | Diesel engine exhaust system | Colm Keegan, Ralph Coupland | 1992-05-19 |