Issued Patents 2011
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8011450 | Active bottomhole pressure control with liner drilling and completion systems | Sven Krueger, Gerald Heisig, Detlef Hahn, Volker Krueger, Peter Aronstam +2 more | 2011-09-06 |