Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5421366 | Solenoid operated air control and check valve | Thomas D. Herrington | 1995-06-06 |
| 5345967 | Secondary air control and check valves | — | 1994-09-13 |
| 5203872 | Secondary air control and check valves | — | 1993-04-20 |