Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6659222 | Multi-chambered muffler | — | 2003-12-09 |
| 6257367 | Stamp-formed muffler | — | 2001-07-10 |
| 6199659 | Stamp-formed muffler | — | 2001-03-13 |
| 6164412 | Muffler | — | 2000-12-26 |
| 6135237 | Stamp-formed muffler | — | 2000-10-24 |
| 5229557 | Rigidified muffler assembly | Richard C. Wilcox, Thomas J. Rohm | 1993-07-20 |
| 4941545 | Muffler assembly | Richard C. Wilcox, Stacy L. Smith | 1990-07-17 |