Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6619574 | Method for verifying the filling level of coal in a ball mill | Daniel Fontanille | 2003-09-16 |
| 5987966 | Device for measuring the quantity of coal in a ball grinder | Daniel Fontanille | 1999-11-23 |
| 5698797 | Device for monitoring a ball grinder | Daniel Fontanille | 1997-12-16 |