Issued Patents 2004
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6762539 | Spark plug for an internal combustion engine and method for production of a middle electrode for an internal combustion engine spark plug | Dittmar Klett, Simon Schmittinger, Dietrich Trachte, Jochen Fischer | 2004-07-13 |