Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4648447 | Casing scraper | Thomas R. Bishop, Archie W. Peil | 1987-03-10 |
| 4558842 | Connector for joining blowout preventer members | Archie W. Peil | 1985-12-17 |
| 4456215 | Inner seal and support rod assembly for high pressure blowout preventers | Thomas R. Bishop | 1984-06-26 |