Issued Patents All Time
Showing 76–78 of 78 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5934383 | Steering device for steerable drilling tool | Rainer Jurgens, Hans Jurgen Faber, Thomas Kruspe | 1999-08-10 |
| 5168941 | Drilling tool for sinking wells in underground rock formations | Hans-Juergen Faber, Dagobert Feld | 1992-12-08 |
| 5099931 | Method and apparatus for optional straight hole drilling or directional drilling in earth formations | Johannes Witte, Rainer Juergens | 1992-03-31 |