(under subclass 181) Devices in which the strips, slats, or panels are positioned in different nonparallel planes when in operative position relative to the support or mounting means.
(1) Note. Those devices in which the strips, slats, or panels are in planar arrangement when in operative position, but fold or otherwise assume a nonplanar arrangement when moved to inoperative position, are in the appropriate subclasses below.
SEE OR SEARCH THIS CLASS, SUBCLASS:
233, for plural strip, slat or panel units with means for maintaining them in other than planar forms.
