US PATENT SUBCLASS 400 / 503
.~ By use of other than rectangular sheet carbon paper (e.g., disc, etc.)

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.~ By use of other than rectangular sheet carbon paper (e.g., disc, etc.) {1}
504  DF  .~.~> Endless-band carbon paper

DEFINITION

Classification: 400/503

By use of other than rectangular sheet carbon paper (e.g., disc, etc.):

(under subclass 497) Subject matter wherein said carbon paper is configured to have a shape that is not a sheet of determinate length and determinate width or not a web of indeterminate length and determinate width.

(1) Note. In this subclass the carbon paper is usually a disc of circular configuration, and see subclass 504 below wherein the carbon paper is configured as an endless band that is not considered to be a web of indeterminate length.

SEE OR SEARCH THIS CLASS, SUBCLASS:

504, for an endless band piece of carbon paper.