Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4990035 | Contour milling cutter | Johann Schmidt | 1991-02-05 |
| 4722644 | Multi-lip drill | — | 1988-02-02 |
| 4667755 | Drill bit having hollow cylindrical body and a plurality of PCD cutting elements | Norbert M/u/ ller | 1987-05-26 |
| 4202557 | Drilling device | August Haussmann, Siegfried Klaissle, Hermann Hugger, Bernhard Moser, Walter Muller +2 more | 1980-05-13 |