Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5368420 | Rotating drill head with a boring bar which is pivotable by a slight distance vertically to the axis of rotation by fluidic means | Hartmut Hirt | 1994-11-29 |
| 5304019 | Rotating drill head with a boring bar which is pivotable by a slight distance transversely to the axis of rotation by fluidic means | Gerhard Klee | 1994-04-19 |