Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6899188 | Down hole drilling assembly with concentric casing actuated jet pump | William James Hughes | 2005-05-31 |
| 6877571 | Down hole drilling assembly with independent jet pump | William James Hughes | 2005-04-12 |
| 4671359 | Apparatus and method for solids removal from wellbores | — | 1987-06-09 |
| 4662437 | Electrically stimulated well production system with flexible tubing conductor | — | 1987-05-05 |