Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8118520 | Drilling device with displacement dependent spring and/or damper | Wolfgang Hintze, Rolf Clausen, Enno Stover, Friedrich Meissner | 2012-02-21 |
| 7347651 | Drilling device | Wolfgang Hintze, Rolf Clausen, Enno Stover, Friedrich Meiβner | 2008-03-25 |