Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7735656 | Self-clearing rotary screening system | — | 2010-06-15 |
| 4440483 | Photographic roll film camera | Gerda Linke, Dieter Engelsmann, Dieter Maas, Hubert Hackenberg | 1984-04-03 |