Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6580202 | Electrically conductive sealing mass for spark plugs | — | 2003-06-17 |
| 6559578 | Spark plug for an internal combustion engine | Werner Herden, Thomas Brinz, Ulrich Eisele, Andreas Niegel | 2003-05-06 |