Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4783084 | Head for a rotating blowout preventor | — | 1988-11-08 |
| 4529210 | Drilling media injection for rotating blowout preventors | — | 1985-07-16 |
| 4500094 | High pressure rotary stripper | — | 1985-02-19 |
| 4441551 | Modified rotating head assembly for rotating blowout preventors | — | 1984-04-10 |
| 4367795 | Rotating blowout preventor with improved seal assembly | — | 1983-01-11 |
| 4208056 | Rotating blowout preventor with index kelly drive bushing and stripper rubber | — | 1980-06-17 |