| 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} |
| 202 | DF | .~.~ Discs sequentially fed to turntable {3} |
| 206 | DF | .~.~.~ By center hold feeding of disc (e.g., spindle drop) {2} |
| 208 | | .~.~.~.~ Having specified spindle structure {2} |
| 209 | DF | .~.~.~.~.~> Umbrella type |
| 210 | DF | .~.~.~.~.~> Having shoulder and ejector lever {1} |