Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7681667 | Drilling apparatus | — | 2010-03-23 |
| 7320365 | Methods for increasing production from a wellbore | — | 2008-01-22 |
| 7204315 | Dual valve well control in underbalanced wells | — | 2007-04-17 |
| 7195085 | Drill bit | — | 2007-03-27 |
| 7143847 | Drilling apparatus | — | 2006-12-05 |
| 7093675 | Drilling method | — | 2006-08-22 |
| 6810960 | Methods for increasing production from a wellbore | — | 2004-11-02 |
| 5890540 | Downhole tool | Richard A. Armell | 1999-04-06 |
| 5819353 | Tool for cleaning or conditioning tubular structures such as well casings | Richard A. Armell | 1998-10-13 |