Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4520882 | Drill head | — | 1985-06-04 |
| 4455278 | Method for producing an object on which an exterior layer is applied by thermal spraying and object, in particular a drill bit, obtained pursuant to this method | Martin B. Verburgh | 1984-06-19 |
| 4365679 | Drill bit | Martin B. Verburgh | 1982-12-28 |
| 4317850 | Method for applying a dense, hard, adhesive and wear-resistant layer of cermets or ceramic material on a metal object | Martin B. Verburgh | 1982-03-02 |
| 4276788 | Process for the manufacture of a drill head provided with hard, wear-resistant elements | — | 1981-07-07 |