Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4612602 | Front plate mounting group for a printed circuit board | Erhard Weyer | 1986-09-16 |
| 4221496 | Writing fluid cartridge | Gerold Anderka, Hans-Joachim Ritter | 1980-09-09 |
| 4217058 | Reservoir cartridge for writing pens | Klaus Straszewski, Jochen Rauterberg | 1980-08-12 |