Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4862975 | Drilling fluid additive | Jerome L. Begnaud | 1989-09-05 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4862975 | Drilling fluid additive | Jerome L. Begnaud | 1989-09-05 |