Dynamic optical information storage or retrieval
Patent class list (only not empty are listed)
Deeper subclasses:
Class / Patent application number | Description | Number of patent applications / Date published |
---|---|---|
720600000 | PARTICULAR CABINET STRUCTURE FOR OPTICAL MEDIA | 575 |
720658000 | DYNAMIC MECHANISM OPTICAL SUBSYSTEM | 299 |
720718000 | OPTICAL STORAGE MEDIUM STRUCTURE | 85 |