US PATENT SUBCLASS 400 / 238
.~.~ Having leader portion (e.g., for threading, etc.)

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}
238.~.~ Having leader portion (e.g., for threading, etc.)

DEFINITION

Classification: 400/238

Having leader portion (e.g., for threading, etc.):

(under subclass 237) Subject matter wherein significance is attributed to a modification of either end of the ribbon*.

(1) Note. Such modification may be for various reasons including facilitating attachment to a spool, facilitating threading of the ribbon through a guide, or permitting handling without soiling the typist's fingers with ink*.