| 5713703 |
Pressure controlled cutter bit retainer with precision adjustable cutter bit |
Wilfried Gerk, Hartmut Hirt |
1998-02-03 |
| 5304019 |
Rotating drill head with a boring bar which is pivotable by a slight distance transversely to the axis of rotation by fluidic means |
Wilfried Gerk |
1994-04-19 |
| 5116171 |
Pressure controlled cutter bit retainer with precision adjustable cutter bit |
Wilfried Gerk, Hartmut Hirt |
1992-05-26 |
| 5033918 |
Device for fine adjustment of the turning tool bit of a rotating radial adjustment head |
Dieter Eysel, Wilfried Gerk, Hartmut Hirt |
1991-07-23 |
| 4697484 |
Rotating drilling head |
Wilfried Gerk, Norbert Jeschke |
1987-10-06 |
| 4661027 |
Tool carriers and unbalance compensating means |
Wilfried Gerk |
1987-04-28 |
| 4592669 |
Direct-recording printer and housing structure therefor |
Gerhard Lohse, Johann Ramold |
1986-06-03 |