Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4941983 | Fluid loss-reducing additives for oil-based well working fluids | Jacqueline A. Coates, John Martin Farrar | 1990-07-17 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4941983 | Fluid loss-reducing additives for oil-based well working fluids | Jacqueline A. Coates, John Martin Farrar | 1990-07-17 |