Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4646829 | Hydraulically set and released bridge plug | Burchus Q. Barrington, Robert T. Evans | 1987-03-03 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4646829 | Hydraulically set and released bridge plug | Burchus Q. Barrington, Robert T. Evans | 1987-03-03 |