Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7247183 | Panel filter with gasket seal | Michael J. Connor, Michael Furseth, Michael J. Frame | 2007-07-24 |
| 6383244 | Filter with retained safety element | Jon S. Wake, Donald E. Stiemke, James Bass, Mark V. Holzmann | 2002-05-07 |