Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4430678 | Drive apparatus for recording disks in which the disk is clamped between a driven recessed member and a rotatably mounted clamping member | Joachim Hack, Roland Brotzler, Klaus Schulze-Berge | 1984-02-07 |