Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6644404 | Method of progressively gravel packing a zone | Roger L. Schultz, Robert Michael | 2003-11-11 |
| 6588507 | Apparatus and method for progressively gravel packing an interval of a wellbore | Ronald Glen Dusterhoft, Roger L. Schultz, Robert Michael | 2003-07-08 |