Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5836408 | Rotary percussion blow assisted drill | Werner Kleine, Axel Neukirchen | 1998-11-17 |
| 5779403 | Percussive blow assisted rotary drill | Werner Kleine, Axel Neukirchen | 1998-07-14 |