Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4747093 | Disc-shaped information carrier and method of manufacturing it | Hermann Koop, Hans Schuddekopf | 1988-05-24 |
| 4726006 | Disc-shaped information carrier and method of manufacturing it | Hermann Koop, Hans Schuddekopf | 1988-02-16 |