Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4319633 | Drill pipe tester and safety valve | Gerald D. Jackson, Burchus Q. Barrington | 1982-03-16 |
| 4319634 | Drill pipe tester valve | Burchus Q. Barrington | 1982-03-16 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4319633 | Drill pipe tester and safety valve | Gerald D. Jackson, Burchus Q. Barrington | 1982-03-16 |
| 4319634 | Drill pipe tester valve | Burchus Q. Barrington | 1982-03-16 |