US PATENT SUBCLASS 400 / 508
.~ Including spool or support for roll of 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}
508.~ Including spool or support for roll of carbon paper {4}
509  DF  .~.~> Including a flat roll or core therefor
510  DF  .~.~> And guide for changing feed direction {1}
511  DF  .~.~> Feed mechanism for feed from roll of carbon paper {2}
512  DF  .~.~> And support for roll of record-medium

DEFINITION

Classification: 400/508

Including spool or support for roll of carbon paper:

(under subclass 497) Subject matter wherein said carbon paper is in the form of a web (i.e., indeterminate length) of material that is coiled in convolutions on a reel, and wherein significance is attributed to said reel or to means for mounting the reel on the typewriter.