Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4767549 | Dispersant coated mineral fiber in a drilling fluid | John D. Hansen | 1988-08-30 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4767549 | Dispersant coated mineral fiber in a drilling fluid | John D. Hansen | 1988-08-30 |