Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11377996 | Muffler with baffle defining multiple chambers | Robert S. Johnson, Patrick J. Crowley, Brett Birschbach | 2022-07-05 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11377996 | Muffler with baffle defining multiple chambers | Robert S. Johnson, Patrick J. Crowley, Brett Birschbach | 2022-07-05 |