Issued Patents All Time
Showing 26–27 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6543221 | Device for stabilizing the flow in the exhaust line of an internal combustion engine | Benedikt Klaus, Alois Ullmer | 2003-04-08 |
| 6499562 | Muffler with variable sound-absorbing characteristics | Gerhard Elfinger, Wolfgang Hahnl, Friedrich Wellner, Klaus Spindler, Thomas Koehler +1 more | 2002-12-31 |