Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4239629 | Carboxymethylhydroxyethyl cellulose in drilling, workover and completion fluids | — | 1980-12-16 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4239629 | Carboxymethylhydroxyethyl cellulose in drilling, workover and completion fluids | — | 1980-12-16 |