Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5509222 | Receiving container for card-like information carriers | — | 1996-04-23 |
| 5494082 | Plastic filler insert for a writing fluid converter | — | 1996-02-27 |
| 5406991 | Plastic filler insert for a writing fluid converter | Petra Maurer, Klaus Nicolai | 1995-04-18 |