US PATENT SUBCLASS 400 / 249
.~.~ Including indicator for depletion of ribbon (e.g., bell, sign, 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}
247  DF  .~ Means auxiliary to ribbon mechanism (e.g., shield, guide, etc.) {3}
249.~.~ Including indicator for depletion of ribbon (e.g., bell, sign, etc.)

DEFINITION

Classification: 400/249

Including indicator for depletion of ribbon (e.g., bell, sign, etc.):

(under subclass 247) Subject matter wherein the ribbon* is supplied to the print-point* from a supply of ribbon, and wherein significance is attributed to a device for informing the typist that the supply has been exhausted.

SEE OR SEARCH THIS CLASS, SUBCLASS:

703, for an indicator of general utility in a typewriter.