Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5279365 | Rotary blowout preventer adaptable for use with both kelly and overhead drive mechanisms | Clint Folsom | 1994-01-18 |
| 5277249 | Rotary blowout preventer adaptable for use with both kelly and overhead drive mechanisms | Clint Folsom | 1994-01-11 |
| 5224557 | Rotary blowout preventer adaptable for use with both kelly and overhead drive mechanisms | Clint Folsom | 1993-07-06 |
| 5178215 | Rotary blowout preventer adaptable for use with both kelly and overhead drive mechanisms | Clint Folsom | 1993-01-12 |