Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12023612 | Filtration media | Kevin R. Schouweiler, Kent Williamson, Kristin M. Amsden | 2024-07-02 |
| 11185806 | Filtration media | Kevin R. Schouweiler, Kent Williamson, Kristin M. Amsden | 2021-11-30 |
| 10195555 | Filtration media | Kevin R. Schouweiler, Kent Williamson, Kristin M. Amsden | 2019-02-05 |
| 5803941 | Filter element | James L. Berkhoel, Dolan Bartels, Michael S. Bergeson, Bruce Johnson | 1998-09-08 |
| 4632216 | Muffler apparatus and method for making same | Wayne M. Wagner, Timothy A. Bethke | 1986-12-30 |
| 4580657 | Integral fluted tube for sound suppression and exhaust ejection | Wayne M. Wagner, John S. Wiese, Bruce Hoppenstedt, Joanne E. Kleinhenz, David L. Roberts | 1986-04-08 |
| 4558891 | Clamp for exhaust system | Wayne M. Wagner, Timothy A. Bethke | 1985-12-17 |