Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5044275 | Electrostatic printing assist system | Franz Knopf, Ernst August Hahne | 1991-09-03 |
| 5027462 | Arrangement for removing dust in folders for printing machines | Gunter Thoma | 1991-07-02 |