US PATENT SUBCLASS 400 / 239
.~.~ With ribbon-reversing indicator or device on 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}
237  DF  .~ Ribbon, per se {4}
239.~.~ With ribbon-reversing indicator or device on ribbon

DEFINITION

Classification: 400/239

With ribbon-reversing indicator or device on ribbon:

(under subclass 237) Subject matter wherein the ribbon* is of a kind which, when in use on a typewriter, is intended to be moved in either of opposite directions relative to a print-point*, and wherein significance is attributed to a modification of the ribbon which either alerts the typist that directional change of the ribbon is desired or controls the mechanism for changing the directional movement of the ribbon.

SEE OR SEARCH THIS CLASS, SUBCLASS:

218, for a mechanism for moving a ribbon in either of opposite directions.