400 / | HD | TYPEWRITING MACHINES |
383 | DF | TYPE-BAR-ACTION MECHANISM OR TYPE-FACE ON TYPE-BAR OR TYPE-FACE INKER {19} |
441 | DF | .~ Type-bar pivot support {10} |
448 | DF | .~.~ Roller bearing or ball bearing for type-bar {1} |
448.1 | .~.~.~ Including plural bearings for each type-bar |