Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4754306 | Microfilm reading and reverse enlarging apparatus | Josef Auer, Hubert Hackenberg, Jurgen Sylla | 1988-06-28 |
| 4601558 | Autoloading microfiche reader | Wilfried Hofmann, Andreas Holzmann, Ruth Meggendorfer, Jurgen Sylla | 1986-07-22 |