Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6557341 | Exhaust system of an internal combustion engine | Normann Freisinger, Roland Kemmler, Martin Matt, Jens Quinten, Peter Struebel | 2003-05-06 |
| 5950584 | Spark plug for forming a spark to jump between two electrodes | — | 1999-09-14 |