Issued Patents 1982
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4324422 | Low torque pack-off seal assembly with retrievable lower section | John K. Rains | 1982-04-13 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4324422 | Low torque pack-off seal assembly with retrievable lower section | John K. Rains | 1982-04-13 |