Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9133643 | Drilling rig assembly method and apparatus | — | 2015-09-15 |
| 8959874 | Portable drilling rig apparatus and assembly method | — | 2015-02-24 |
| 8555564 | Drilling rig assembly method and apparatus | — | 2013-10-15 |
| 5575332 | Reeled well tubing systems | — | 1996-11-19 |
| 5216867 | Well mast structure | James E. Armstrong | 1993-06-08 |
| 4885893 | Well mast structure | James E. Armstrong | 1989-12-12 |