Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5586569 | Pneumatic pressure regulator | John R. Hanning | 1996-12-24 |
| 4543979 | Liquid level control having improved instrument air valve | Quin D. Kroll | 1985-10-01 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5586569 | Pneumatic pressure regulator | John R. Hanning | 1996-12-24 |
| 4543979 | Liquid level control having improved instrument air valve | Quin D. Kroll | 1985-10-01 |