Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4481121 | Viscosifier for oil base drilling fluids | — | 1984-11-06 |
| 4417900 | High temperature solid fire starter | — | 1983-11-29 |
| 4222988 | Apparatus for removing hydrocarbons from drill cuttings | — | 1980-09-16 |
| 4206902 | Inner element for a flow regulator | Robert R. Bell | 1980-06-10 |