Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6676721 | Multistage air cleaner including pulse cleaning system | Stan M. Koehler, William J. Krisko, Thomas Miller, Winston E. Olson, Fred H. Wahlquist +2 more | 2004-01-13 |
| 6673136 | Air filtration arrangements having fluted media constructions and methods | Mark A. Gogins, Thomas M. Weik | 2004-01-06 |