US PATENT SUBCLASS 400 / 240.1
.~.~.~ Including correction-material field

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}
237  DF  .~ Ribbon, per se {4}
240  DF  .~.~ Including differently pigmented fields {4}
240.1.~.~.~ Including correction-material field

DEFINITION

Classification: 400/240.1

Including correction-material field:

(under subclass 240) Subject matter wherein one of the zones includes a coloring agent which is a coating of a color approximating the color of the record-medium*, which coating will adhere to the ink*, of an imprinted character*, or wherein one of the zones includes a chemical agent which eradicates the ink that has been imprinted on the record-medium.

SEE OR SEARCH THIS CLASS, SUBCLASS:

697, for an error-correcting sheet or tape.