| 369 / | HD | DYNAMIC INFORMATION STORAGE OR RETRIEVAL | 
| 99 | DF | SPECIFIC DETAIL OF INFORMATION HANDLING PORTION OF SYSTEM {4} | 
| 127 | DF | .~ Mechanical modification or sensing of storage medium {6} | 
| 155 | DF | .~.~ Mechanical conversion to or from sound {4} | 
| 160 | DF | .~.~.~ Sound box {6} | 
| 162 |  | .~.~.~.~ Including stylus pivoted from fixed casing |