Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9788590 | Noise reduction elements | Steven A. Hein | 2017-10-17 |
| 8931118 | Motorsports helmet with noise reduction elements | Steven A. Hein | 2015-01-13 |
| 7426980 | Internal combustion engine exhaust system | — | 2008-09-23 |
| 7231762 | Exhaust manifold flange | — | 2007-06-19 |
| 7152398 | Dual motorcycle exhaust system | — | 2006-12-26 |
| 7086991 | Rope climbing simulator | Michael E. Williams | 2006-08-08 |
| 6889499 | Internal combustion engine exhaust system | — | 2005-05-10 |
| D499999 | Motorcycle exhaust system | — | 2004-12-21 |
| 6804955 | Dual motorcycle exhaust system | — | 2004-10-19 |
| D464597 | Automobile and truck gasket-less connector | — | 2002-10-22 |
| 6463641 | Motorcycle exhaust system | — | 2002-10-15 |
| 6247305 | Motorcycle exhaust system | — | 2001-06-19 |
| D435498 | Motorcycle exhaust system | — | 2000-12-26 |