Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4542393 | Print head for an electroerosion printer | Fritz Hilpert, Volker Rudolph, Manfred Wohnsdorf | 1985-09-17 |
| 4502797 | Arrangement for pressing a print head against a record carrier | Fritz Hilpert, Volker Rudolph, Manfred Wohnsdorf | 1985-03-05 |