Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5230387 | Downhole combination tool | Robert L. Waters, George F. Roberts, Philip H. Walters, Howard C. Clark, Don D. Fitzgerald | 1993-07-27 |
| 5064006 | Downhole combination tool | Robert L. Waters, George F. Roberts, Philip H. Walters, Howard C. Clark, Don D. Fitzgerald | 1991-11-12 |