Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6579046 | Tool head | Dieter Eysel | 2003-06-17 |
| 5713703 | Pressure controlled cutter bit retainer with precision adjustable cutter bit | Wilfried Gerk, Gerhard Klee | 1998-02-03 |
| 5368420 | Rotating drill head with a boring bar which is pivotable by a slight distance vertically to the axis of rotation by fluidic means | Wilfried Gerk | 1994-11-29 |
| 5116171 | Pressure controlled cutter bit retainer with precision adjustable cutter bit | Wilfried Gerk, Gerhard Klee | 1992-05-26 |
| 5033918 | Device for fine adjustment of the turning tool bit of a rotating radial adjustment head | Dieter Eysel, Wilfried Gerk, Gerhard Klee | 1991-07-23 |