Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6825454 | Automatic focusing device for an optical appliance | Norbert Czarnetzki, Stefan Mack, Toshiro Kurosawa, Eckard Hagemann | 2004-11-30 |
| 6674572 | Confocal microscopic device | Norbert Czarnetzki | 2004-01-06 |