Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8246474 | Kelly bar arrangement | Melchior Jais | 2012-08-21 |
| 8002048 | Drilling implement and method for operating a drilling implement | Matthias Saehn, Matthias Jais | 2011-08-23 |
| 7775300 | Earth drilling device | — | 2010-08-17 |