Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4682559 | Gas driven anchor and launching system therefor | Emanuel Schnitzer | 1987-07-28 |
| 4566429 | Cooking grid | — | 1986-01-28 |
| 4541606 | Ram-type blowout preventer | — | 1985-09-17 |
| 4381868 | Pressure-actuated wellhead sealing assembly | David G. Croy, Lee M. Hollingsworth, Richard D. Jolly, Mark C. Tate | 1983-05-03 |
| 4227543 | Blowout preventer | — | 1980-10-14 |
| 4214600 | Valve | William M. Taylor | 1980-07-29 |