Issued Patents 2021
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 11021945 | Method to mitigate bit induced vibrations by intentionally modifying mode shapes of drill strings by mass or stiffness changes | Andreas Hohl, Mathias Tergeist, Hatem Oueslati, Christian Herbig, Hanno Reckmann +1 more | 2021-06-01 | $28,532,000 |