Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6824591 | Air filter for an internal combustion engine | Roger Holle, Michael Wessels | 2004-11-30 |
| 6776890 | Methods for operating a mixed potential exhaust sensor and circuit configurations for carrying out said method | Thomas Brinz, Bernd Schumann, Bernhard Bloemer | 2004-08-17 |