Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6432331 | Tank bottom restoration process | Becky L. Ogden, George P. Southwell | 2002-08-13 |
| 4932474 | Staged screen assembly for gravel packing | Donald E. Schroeder, Jr. | 1990-06-12 |