Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6213146 | Valve assembly for preventing liquid ingestion and methods | Daniel T. Risch, Gary R. Gillingham, Fred H. Wahlquist, Wayne M. Wagner, Joseph C. Tokar +1 more | 2001-04-10 |
| 6209559 | Valve assembly for preventing liquid ingestion and methods | Daniel T. Risch, Gary R. Gillingham, Fred H. Wahlquist, Wayne M. Wagner, Joseph C. Tokar +1 more | 2001-04-03 |
| 6009898 | Valve assembly for preventing liquid ingestion and methods | Daniel T. Risch, Gary R. Gillingham, Fred H. Wahlquist, Wayne M. Wagner, Joseph C. Tokar +1 more | 2000-01-04 |
| 5616171 | Pulse jet filter cleaning system | Marty Barris, Thomas M. Weik, Kelly C. Robertson, Donald R. Monson, Jim C. Rothman | 1997-04-01 |