Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4515843 | Disc-shaped information carrier having a high storage density | Herbert Knothe, Bruno Rybka | 1985-05-07 |
| 4351047 | Centering of a disc-shaped record carrier on a turntable | Horst Redlich, Rainer Ihlenburg | 1982-09-21 |
| 4322841 | Playback instrument for an information carrier disc | Horst Redlich | 1982-03-30 |
| 4234394 | Method for producing an information carrier disc | — | 1980-11-18 |