US PATENT SUBCLASS 400 / 228
.~.~ Including pin-feed-engaging 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}
223  DF  .~ Ribbon-feeding mechanism {13}
228.~.~ Including pin-feed-engaging ribbon

DEFINITION

Classification: 400/228

Including pin-feed-engaging ribbon:

(under subclass 223) Subject matter wherein the ribbon* is moved by contacting the ribbon with elements that are movable in a ribbon-feeding direction, which elements either pierce the ribbon or move into preformed openings in the ribbon.