| 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 | ![]() | .~.~ Printhead {6} |
| 124.12 | DF | .~.~.~> Having assembly means |
| 124.13 | DF | .~.~.~> Overheat protection |
| 124.14 | DF | .~.~.~> With actuator {3} |
| 124.24 | DF | .~.~.~> Impact member guide {3} |
| 124.28 | DF | .~.~.~> Impact member tip arrangement |
| 124.29 | DF | .~.~.~> Impact member structure {3} |