US PATENT SUBCLASS 400 / 568
.~ By electric-power drive


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

545  DF  FOR LINE-SPACING BY INCREMENTAL ROTATION OF PLATEN {15}
568.~ By electric-power drive


DEFINITION

Classification: 400/568

By electric-power drive:

(under subclass 545) Subject matter wherein the incremental rotation (i.e., step-by-step turning) of the platen* is accomplished with the help of force derived from electrical energy.

(1) Note. The forms of electrical power used include: an electromagnet, a stepping motor (i.e., an electric motor operated incrementally), a rotating electric motor, etc., the named devices being only exemplary of those that may be used.