Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5058671 | Pipe insert assembly | — | 1991-10-22 |
| 5058672 | Landing collar and float valve assembly | — | 1991-10-22 |
| 5048611 | Pressure operated circulation valve | — | 1991-09-17 |
| 5048612 | Double nut setting tool and linger hanger assembly | — | 1991-09-17 |
| 4519456 | Continuous flow perforation washing tool and method | — | 1985-05-28 |
| 4267675 | Well working rig | — | 1981-05-19 |