Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4693313 | Insulated wellbore casing | Raymond Charles HOWE | 1987-09-15 |
| 4635967 | Internal seal for insulated steam injection casing assembly | — | 1987-01-13 |
| 4415184 | High temperature insulated casing | Victor R. Brown | 1983-11-15 |
| 4332401 | Insulated casing assembly | John M. Kohl, Charles R. Cunningham | 1982-06-01 |