Issued Patents 2002
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6488746 | Air filter assembly having non-cylindrical filter elements, for filtering air with particulate matter | Steven A. Johnson, Thomas D. Raether | 2002-12-03 |
| 6387162 | Air filter assembly having non-cylindrical filter elements, for filtering air with particulate matter | Steven A. Johnson, Thomas D. Raether | 2002-05-14 |
| 6368388 | Filter construction apparatus and method | James A. Severson, Thomas D. Raether, Robert Bick, Steven A. Johnson | 2002-04-09 |
| 6364921 | Air filter assembly for filtering air having particulate matter | Thomas D. Raether, Steven A. Johnson | 2002-04-02 |