US PATENT SUBCLASS 400 / 317.1
.~.~.~ For bidirectional drive

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

283  DF  CARRIAGE OR CARRIAGE-MOVING OR MOVEMENT-REGULATING MECHANISM {11}
313  DF  .~ Carriage-return mechanism {5}
317  DF  .~.~ Including power drive (e.g., electric, spring, etc.) {3}
317.1.~.~.~ For bidirectional drive

DEFINITION

Classification: 400/317.1

For bidirectional drive:

(under subclass 317) Subject matter wherein the carriage* is moved in its return movement and in its feed movement by way of energy applied to the mechanism other than energy supplied by the typist.