Issued Patents 1994
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5355967 | Underbalance jet pump drilling method | William O. Jacobson | 1994-10-18 |
| 5339910 | Drilling torsional friction reducer | — | 1994-08-23 |
| 5291956 | Coiled tubing drilling apparatus and method | Julio M. Quintana, Robert Hinkel | 1994-03-08 |