Top Inventors at Nine Downhole Technologies All Time
Showing 1–8 of 8 inventors
| Rank | Name | Patents |
|---|---|---|
| 1 | Donald Roy Greenlee | 9 |
| 2 | Donald Jonathan Greenlee | 7 |
| 3 | Viggo Brandsdal | 5 |
| #4 | Ronald Abt | 2 |
| #4 | Steven Bailey | 2 |
| #4 | W. Lynn Frazier | 2 |
| #7 | Brian David Oligschlaeger | 1 |
| #7 | Geir Valestrand Aasheim | 1 |