Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6821071 | Automated pipe racking process and apparatus | Rod Duncan | 2004-11-23 |
| 5211251 | Apparatus and method for moving track guided equipment to and from a track | — | 1993-05-18 |
| 4834604 | Pipe moving apparatus and method | John C. Brittain, Cecil Jenkins, William P. Adelman | 1989-05-30 |
| 4725179 | Automated pipe racking apparatus | Cecil Jenkins, John C. Brittain | 1988-02-16 |
| 4390162 | Infinitely variable crown block positioning | — | 1983-06-28 |
| 4375892 | Oil well drilling rig mover | Cecil Jenkins | 1983-03-08 |
| 4324077 | Method of moving a drilling rig long and short distances | — | 1982-04-13 |