Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6715580 | Gas flow-through line with sound absorption effect | Ralph Gerstner | 2004-04-06 |
| 5979962 | Load floor lining having integrated sound insulation | Erhard Valentin, Hans Walendy | 1999-11-09 |