Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6543789 | Chuck for a boring tool | Jens Frenzel, Uto Plank | 2003-04-08 |
| 5992541 | Drilling and/or chiselling tool | Jens Frenzel, Hans-Werner Bongers-Ambrosius | 1999-11-30 |
| 5975217 | Tool for drilling and/or chiseling | Jens Frenzel, Reinhard Schulz, Hans-Werner Bongers-Ambrosius | 1999-11-02 |