Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10421509 | Method and apparatus for moving heavy objects | Axel Michael Sigmar | 2019-09-24 |
| 9938777 | Land drilling rig and methods of assembly | Axel Michael Sigmar | 2018-04-10 |
| 8997428 | Tension link for drill floor substructure assembly | Keith J. Orgeron | 2015-04-07 |
| 8556003 | Split sub-basement drill rig | — | 2013-10-15 |
| 8550761 | Drill pipe handling and moving system | Jaroslav Belik | 2013-10-08 |