Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4361187 | Downhole mixing valve | — | 1982-11-30 |
| 4315543 | Seal system for wellhead isolation tool diffuser | Richard L. Giroux | 1982-02-16 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4361187 | Downhole mixing valve | — | 1982-11-30 |
| 4315543 | Seal system for wellhead isolation tool diffuser | Richard L. Giroux | 1982-02-16 |