US PATENT SUBCLASS 40 / 436
.~.~ Movable screen

Current as of: June, 1999
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40 /   HD   CARD, PICTURE, OR SIGN EXHIBITING

427  DF  DISPLAY WITH SPECIAL EFFECTS {5}
429  DF  .~ Electromotor operated {2}
436.~.~ Movable screen {2}
437  DF  .~.~.~> Grid or artwork
438  DF  .~.~.~> Moving belt

DEFINITION

Classification: 40/436

Movable screen:

(under subclass 429) Display device which includes one or more screens moved relative to an observer by the motor.