Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6732805 | Sleeve liner for wireline entry sub assembly and method of use | — | 2004-05-11 |
| 6269879 | Sleeve liner for wireline entry sub assembly | — | 2001-08-07 |
| 5996712 | Mechanical locking swivel apparatus | — | 1999-12-07 |
| 5664627 | Method and apparatus for protecting a steel riser from chemical cutters | — | 1997-09-09 |
| RE33150 | Borehole drill pipe continuous side entry or exit apparatus and method | — | 1990-01-23 |
| 4681162 | Borehole drill pipe continuous side entry or exit apparatus and method | — | 1987-07-21 |