Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5156222 | Directional drilling tool apparatus and method | Rainer Jurgens, Rudolf Roper, Joachim Oppelt, Dagobert Feld | 1992-10-20 |
| 5109924 | One trip window cutting tool method and apparatus | Rainer Jurgens | 1992-05-05 |
| 4463815 | Mechanical jarring tool | Rainer Jurgens | 1984-08-07 |