Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 9109403 | Drill bit assembly having electrically isolated gap joint for electromagnetic telemetry | Derek W. Logan, Garry Holmen, Tony Dopf, Aaron W. Logan, Brian Clark +1 more | 2015-08-18 | $56,520,000 |
| 9004196 | Drill bit assembly having aligned features | Kjell Haugvaldstad, Derek W. Logan, Garry Holmen, Tony Dopf, Aaron W. Logan | 2015-04-14 | $55,364,000 |