Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8444748 | Multistage air cleaner including pulse cleaning system | Gary R. Gillingham, William J. Krisko, Thomas Miller, Winston E. Olson, Fred H. Wahlquist +2 more | 2013-05-21 |
| 7314555 | Filter cartridge for a filter assembly | Brent A. Gulsvig, John R. Hacker | 2008-01-01 |
| 7090711 | Multistage air cleaner including pulse cleaning system | Gary R. Gillingham, William J. Krisko, Thomas Miller, Winston E. Olson, Fred H. Wahlquist +2 more | 2006-08-15 |
| 6908494 | Multistage air cleaner including pulse cleaning system | Gary R. Gillingham, William J. Krisko, Thomas Miller, Winston E. Olson, Fred H. Wahlquist +2 more | 2005-06-21 |
| 6872237 | Multistage air cleaner including pulse cleaning system | Gary R. Gillingham, William J. Krisko, Thomas Miller, Winston E. Olson, Fred H. Wahlquist +2 more | 2005-03-29 |
| 6676721 | Multistage air cleaner including pulse cleaning system | Gary R. Gillingham, William J. Krisko, Thomas Miller, Winston E. Olson, Fred H. Wahlquist +2 more | 2004-01-13 |