Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6892854 | Muffler with catalytic converter arrangement; and method | Wayne M. Wagner, Marty Barris, Douglas E. Flemming, Peter A. Betts | 2005-05-17 |
| 6550573 | Muffler with catalytic converter arrangement, and method | Wayne M. Wagner, Marty Barris, Douglas E. Flemming, Peter A. Betts | 2003-04-22 |
| 5828013 | Muffler with catalytic converter arrangement; and method | Wayne M. Wagner, Marty Barris, Douglas E. Flemming, Peter A. Betts | 1998-10-27 |
| 5683479 | Air cleaner having scavenger arrangement | Gary R. Gillingham, Peter A. Betts, Daniel T. Risch, Fred H. Wahlquist | 1997-11-04 |
| 5575826 | Air cleaner | Gary R. Gillingham, Peter A. Betts, Daniel T. Risch, Fred H. Wahlquist | 1996-11-19 |
| 5426269 | Muffler with catalytic converter arrangement; and method | Wayne M. Wagner, Marty Barris, Douglas E. Flemming, Peter A. Betts, John S. Wiese +1 more | 1995-06-20 |
| 5401285 | Air cleaner having scavenger arrangement for precleaner and filter thereof | Gary R. Gillingham, Peter A. Betts, Daniel T. Risch, Fred H. Wahlquist | 1995-03-28 |
| 5355973 | Muffler with catalytic converter arrangement; and method | Wayne M. Wagner, Marty Barris, Douglas E. Flemming, Peter A. Betts | 1994-10-18 |
| 5293742 | Trap apparatus with tubular filter element | Gary R. Gillingham, Kelly C. Robertson, Marty Barris, Peter A. Betts, Wayne M. Wagner | 1994-03-15 |
| 5246205 | Valve assembly and use | Gary R. Gillingham, Peter A. Betts, Wayne M. Wagner | 1993-09-21 |
| 5123501 | In-line constricted sound-attenuating system | Charles O. Reinhart, Donald R. Monson | 1992-06-23 |
| 4588423 | Electrostatic separator | Gary R. Gillingham | 1986-05-13 |