Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5808245 | Vertical mount catalytic converter muffler | David E. Winnes | 1998-09-15 |
| 5426269 | Muffler with catalytic converter arrangement; and method | Wayne M. Wagner, Marty Barris, Douglas E. Flemming, James C. Rothman, Peter A. Betts +1 more | 1995-06-20 |
| 4969537 | Muffler assembly and method of manufacture | Wayne M. Wagner, John Campbell, William L. Burchett, John Hiemstra, Timothy A. Bethke | 1990-11-13 |
| 4580657 | Integral fluted tube for sound suppression and exhaust ejection | Steven D. Schmeichel, Wayne M. Wagner, Bruce Hoppenstedt, Joanne E. Kleinhenz, David L. Roberts | 1986-04-08 |