Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4867589 | Matrix printer with ink ribbon guide disposed on print head carriage | Alois Limberger, Dieter Stellmach, Hans-Joachim Wysk | 1989-09-19 |
| 4701063 | Printing apparatus with document cutting device | Hans-Joachim Wysk, Dieter Stellmach, Gerd Gronwald, Werner Maedge | 1987-10-20 |