Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4351047 | Centering of a disc-shaped record carrier on a turntable | Heinz Borchard, Rainer Ihlenburg | 1982-09-21 |
| 4322841 | Playback instrument for an information carrier disc | Heinz Borchard | 1982-03-30 |