US PATENT SUBCLASS 400 / 504
.~.~ Endless-band 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}
503  DF  .~ By use of other than rectangular sheet carbon paper (e.g., disc, etc.) {1}
504.~.~ Endless-band carbon paper

DEFINITION

Classification: 400/504

Endless-band carbon paper:

(under subclass 503) Subject matter wherein said carbon paper is configured as a closed-loop strip of material having a determinate width, but the length of which is interminable due to its closed-loop configuration.