Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9140374 | Directional exhaust valve | Leo Jans | 2015-09-22 |
| 7926615 | Method of making an exhaust-noise attenuation muffler, and exhaust-noise attenuation muffler | Christian Smatloch | 2011-04-19 |