US PATENT SUBCLASS 400 / 245
.~.~ Including magnetic retainer

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}
242  DF  .~ Ribbon spool or mount therefor {4}
245.~.~ Including magnetic retainer

DEFINITION

Classification: 400/245

Including magnetic retainer:

(under subclass 242) Subject matter wherein magnetic* force is used to hold the cylindrical member in position on the typewriter.