Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5317337 | Printing method for disc-shaped information carriers | — | 1994-05-31 |
| 4462019 | Photosensitive semiconductor resistor | Gerhard Raabe, Heinz Sauermann, Rainer Burmeister | 1984-07-24 |