400 / | HD | TYPEWRITING MACHINES |
497 | DF | WITH CONTROL OF "CARBON PAPER" FOR TYPING PLURAL SIMULTANEOUS COPIES BY SINGLE IMPRESSION (E.G., ON "MANIFOLD SET") {10} |
513 | DF | .~ Including relative movement between carbon paper and record-medium {5} |
515 | .~.~ Including front insertion of carbon paper or record-medium |