Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8316942 | ESP for perforated sumps in horizontal well applications | Donn J. Brown | 2012-11-27 |
| 7984766 | System, method and apparatus for gas extraction device for down hole oilfield applications | Donn J. Brown, Earl B. Brookbank | 2011-07-26 |
| 6899517 | Attachment of bearing elements by deformation | Farral D. Gay, Terry W. Shafer | 2005-05-31 |