Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6045121 | Bi-directional valve seal mechanism | James E. Barker, Steven K. Neu | 2000-04-04 |
| 5865422 | Bi-directional valve seal mechanism | James E. Barker, Steven K. Neu | 1999-02-02 |