| 400 / | HD | TYPEWRITING MACHINES | 
| 118.2 | DF | TYPING BY OTHER THAN TYPE-FACE OR TYPE-DIE {3} | 
| 124.01 | DF | .~ Character formation by impact (e.g., wire matrix) {4} | 
| 124.11 | DF | .~.~ Printhead {6} | 
| 124.24 | DF | .~.~.~ Impact member guide {3} | 
| 124.25 |  | .~.~.~.~ With lubricator |