Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4460053 | Drill tool for deep wells | Rainer Jurgens | 1984-07-17 |
| 4200159 | Cutter head, drill bit and similar drilling tools | Eberhard Peschel, Klaus Katzorke, Rainer Jurgens | 1980-04-29 |