(under the class definition) Device wherein a composite sheet consisting of a sheet* with a tab, continuous strip or other attachment means secured to one margin of the sheet is claimed or disclosed to be secured to the device by an elongated element of the device cooperating with an aperture or notch in the tab, continuous strip, or other attachment means to releasably secure the sheet by disengagement from the notch or aperture.
(1) Note. The elongated element referred to in the above definition was considered a sheet retainer* in the development of this class and accordingly, a search for a sheet retainer having particular structure is provided for in the appropriate preceding subclasses.
SEE OR SEARCH CLASS
281, Books, Strips, and Leaves,
23, for a book including continuous strips to attach a signature or leaf holder including means cooperating with the fold of a folded sheet to secure the same thereto.
