(under subclass 12) Combinations in which the exit structure includes at least two panels, strips or combinations of panels and strips spaced from each other in any direction and/or positioned in over-lapping relationship.
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13, and 130+ (especially subclasses 222+) for devices of the plural strip, slat or panel type having overlapping or spaced sections.
14, for such exit structure with a zigzag surface formation.
