US PATENT SUBCLASS 400 / 505
.~ By multicolor carbon paper

Current as of: June, 1999
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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}
505.~ By multicolor carbon paper

DEFINITION

Classification: 400/505

By multicolor carbon paper:

(under subclass 497) Subject matter wherein said carbon paper is formed having a plurality of colors or pigments thereon, whereby the carbon copy imprinted therewith may have character* symbols imprinted in selected colors.