(under the class definition) Device comprising either (1) a set of printed or blank sheets bound together into a volume, (2) a printed or blank sheet of stiff paper or paperboard, or (3) a substantially two-dimensional visual design or representation, formed by printing, drawing, painting or photography; wherein the method of operation is to alter the appearance of the volume, sheet, design, or representation.
(1) Note. This subclass does not include devices which replace an entire picture with another, as do thaumatropic devices. To be proper for this subclass under part (3), a portion of a picture must be changed.
SEE OR SEARCH THIS CLASS, SUBCLASS:
321, for a doll having plural selectively displayed faces, limbs or bodies.
SEE OR SEARCH CLASS
40, Card, Picture, or Sign Exhibiting,
446+, for a display device comprising a changing exhibitor; and subclasses 427+ for display devices which produce a special effect, particularly subclass 445 for a hand manipulated folded slided card.
