Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4650151 | Subsea gate valve actuator with external manual override and drift adjustment | — | 1987-03-17 |
| 4568062 | Fire-resistant gate valve | Alfred P. Regitz, Stephen P. Barrett, Charles E. Jennings, Kendall E. Keene, Bashir M. Koleilat +2 more | 1986-02-04 |
| 4510960 | Valve stem-to-bonnet backseat | Charles E. Jennings, Claud C. Barrington, Lien-Yan Chen, Bob C. Hopkins, Alfred P. Regitz | 1985-04-16 |