Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5353883 | Drilling tool of the displacing type | Hinrich Kattentidt | 1994-10-11 |
| 5350027 | Drill machine table | Achim Kehrberger | 1994-09-27 |
| 5154667 | Power hammer improvements | Rudolf Hennecke | 1992-10-13 |
| 5072584 | Hydraulic drive with fluid cooling by-pass line | Achim Kehrberger | 1991-12-17 |
| 4911581 | Pre-cast concrete pile and method and apparatus for its introduction into the ground | — | 1990-03-27 |
| 4860835 | Diesel type pile-driver | — | 1989-08-29 |
| 4442150 | Flexible two-dimensional material | Wolfgang Greiner | 1984-04-10 |