| 369 / | HD | DYNAMIC INFORMATION STORAGE OR RETRIEVAL | 
| 176 | DF | DYNAMIC MECHANISM SUBSYSTEM {8} | 
| 178 | DF | .~ Access of multiple storage elements (e.g., record changer) {14} | 
| 191 |  | .~.~ Storage disc fed to and removed from turntable {4} | 
| 192 | DF | .~.~.~> Plural disc holder having unitary separating structure | 
| 193 | DF | .~.~.~> Grouped removal with sequential feed | 
| 194 | DF | .~.~.~> Coplanar storage | 
| 195 | DF | .~.~.~> Both sides of disc used |