Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4834843 | Method of marking disc-shaped information carriers | Hermann Koop | 1989-05-30 |
| 4747093 | Disc-shaped information carrier and method of manufacturing it | Karsten Benne, Hermann Koop | 1988-05-24 |
| 4726006 | Disc-shaped information carrier and method of manufacturing it | Karsten Benne, Hermann Koop | 1988-02-16 |