US PATENT SUBCLASS 400 / 206.1
.~.~.~ Including "carbon paper" ribbon

Current as of: June, 1999
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400 /   HD   TYPEWRITING MACHINES

191  DF  INCLUDING INTERPOSED INKING DEVICE (E.G., RIBBON) FOR RECORD-MEDIUM {15}
204  DF  .~ For typing plural copies simultaneously with ribbon(s) (e.g., duplicate typing) {2}
206  DF  .~.~ Using plural ribbons (e.g., additional ribbon(s) {4}
206.1.~.~.~ Including "carbon paper" ribbon

DEFINITION

Classification: 400/206.1

Including "carbon paper" ribbon:

(under subclass 206) Subject matter wherein at least one ribbon* is a ribbon formed from carbon paper.

(1) Note. See (1) Note under subclass 497 in this class for a discussion of the term carbon paper.