Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4378849 | Blowout preventer with mechanically operated relief valve | — | 1983-04-05 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4378849 | Blowout preventer with mechanically operated relief valve | — | 1983-04-05 |