Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8960336 | Rock drill bit | Heinrich Kersten, Joerg Frommeyer, Hermann Albers, Ranier Lampe | 2015-02-24 |
| D629027 | Rock drill | Heinrich Kersten, Joerg Frommeyer, Hermann Albers | 2010-12-14 |