Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4422947 | Wellbore fluid | David L. Dorsey | 1983-12-27 |
| 4422948 | Lost circulation material | David L. Dorsey | 1983-12-27 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4422947 | Wellbore fluid | David L. Dorsey | 1983-12-27 |
| 4422948 | Lost circulation material | David L. Dorsey | 1983-12-27 |