(under the class definition) Device provided with a plurality of closures for a single opening, arranged one above the other, and wherein each is movable in the direction of its
length separately from the movement of the other closure.
SEE OR SEARCH THIS CLASS, SUBCLASS:
42, for independently movable closures which move to a horizontal overhead position.
125, for independently movable closures which move to a stacked position.
464, for removable, independently stacked closures.
