Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6585792 | Air filtering system having easily removable and replaceable filter element, and methods | Jarren B. Mills, Daniel E. Adamek, Terrance D. Feddersen | 2003-07-01 |
| 6093237 | Stack filter assembly and methods | Scott Keller, Todd G. Carey, David Ferris | 2000-07-25 |
| 6077335 | Filter and method for making a filter | Henry J. Drasner, III, Allan L. Liebrenz, Katsushi Isogawa, Stanley B. Miller, III, Paul L. Kojetin +3 more | 2000-06-20 |
| 5997618 | Filter and method for making a filter | Henry J. Drasner, III, Allan L. Liebrenz, Katsushi Isogawa, Stanley B. Miller, III, Paul L. Kojetin +3 more | 1999-12-07 |
| 4657570 | Air filter device | Donald D. Gronholz, James R. Scott | 1987-04-14 |