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} |
124.14 | DF | .~.~.~ With actuator {3} |
124.15 | .~.~.~.~ Single actuator for simultaneous actuation of plural impact members |