Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE32469 | Side pocket mandrel | David T. Merritt, David Fish | 1987-08-11 |
| 4420044 | Flow control system | William H. Pullin | 1983-12-13 |
| 4416330 | Side pocket mandrel | David T. Merritt, David Fish | 1983-11-22 |
| 4398601 | Parking tool for pumpdown well completion system | Kenneth L. Schwendemann | 1983-08-16 |
| 4365671 | Well system | — | 1982-12-28 |
| 4299281 | Compensating bridge plug | Ronald F. Langham | 1981-11-10 |