US PATENT SUBCLASS 400 / 240
.~.~ Including differently pigmented fields

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


400 /   HD   TYPEWRITING MACHINES

191  DF  INCLUDING INTERPOSED INKING DEVICE (E.G., RIBBON) FOR RECORD-MEDIUM {15}
237  DF  .~ Ribbon, per se {4}
240.~.~ Including differently pigmented fields {4}
240.1  DF  .~.~.~> Including correction-material field
240.2  DF  .~.~.~> With prevention of bleeding between adjacent fields
240.3  DF  .~.~.~> Including fields arranged transversely to elongated dimension of ribbon
240.4  DF  .~.~.~> Including more than two fields

DEFINITION

Classification: 400/240

Including differently pigmented fields:

(under subclass 237) Subject matter wherein the ribbon* has plural zones impregnated or coated with a coloring agent intended to be transferred from the ribbon to the record-medium* during typing, the coloring agent in one zone being ink* of a first color, and the coloring agent in another zone being of a different shade or color than the first color.