Issued Patents 2011
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8047283 | Torque sub for use with top drive | Bernd-Georg Pietras, Karsten Heidecke | 2011-11-01 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8047283 | Torque sub for use with top drive | Bernd-Georg Pietras, Karsten Heidecke | 2011-11-01 |