Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5584353 | Well jar accelerator with expansion chamber | Roger Chancey, Wayne A. Kovar | 1996-12-17 |
| 4877217 | Fail-safe blowout preventer | Thomas R. Bishop | 1989-10-31 |
| 4648447 | Casing scraper | Thomas R. Bishop, Arnal B. Foreman, Jr. | 1987-03-10 |
| 4558842 | Connector for joining blowout preventer members | Arnal B. Foreman, Jr. | 1985-12-17 |
| 4439167 | Shock absorber assembly | Thomas R. Bishop, Wayne A. Kovar, Roger Chancey | 1984-03-27 |
| 4398729 | Blowout preventer inner ram seal assembly | Thomas R. Bishop | 1983-08-16 |
| 4369977 | Seal for an overshot and a method of doing same | Thomas R. Bishop | 1983-01-25 |