400 / | HD | TYPEWRITING MACHINES |
139 | DF | INCLUDING TYPE-SET-ASSEMBLAGE MOUNTED ON CARRIER AND RELATIVELY MOVABLE FOR SELECTION AND FOR IMPACT OF TYPE-FACE {11} |
160 | DF | .~ Imprint by pivoting of type-head-carrier and type-head against record-medium {7} |
162 | DF | .~.~ Type-head movable for selection of type-face {14} |
162.3 | ![]() | .~.~.~ Via coded disc in electric or magnetic circuit (e.g., photoelectric) |