US PATENT SUBCLASS 400 / 660.3
.~.~.~ By disengageable platen sectors

Current as of: June, 1999
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400 /   HD   TYPEWRITING MACHINES

648  DF  PLATEN OR PLATEN-MOVING MECHANISM {5}
659  DF  .~ Cylindrical platen {3}
660  DF  .~.~ Detachably secured to platen carriage {3}
660.3.~.~.~ By disengageable platen sectors

DEFINITION

Classification: 400/660.3

By disengageable platen sectors:

(under subclass 660) Subject matter wherein the platen* is formed of a plurality of segments surrounding the axis of rotation of the platen and wherein the platen is removed from the carriage* by disassembling the segments.