A library-agenda of interchangeable leaves. (Machine-translation by Google Translate, not legally binding)

摘要

A book-agenda of interchangeable sheets, characterized in that it essentially comprises the assembly constituted by a flexible outer cover combined with interchangeable blades provided with foldable tabs which are apt to be assembled and extracted in or from the interior part of the cover, with the particularity that these elements are provided with means, flexible guides, support and support, the first to guide, precisely in areas separated from each other, the aforementioned foldable tabs, the second so that against them directly support, and indirectly bending lines of the tabs of the successive interchangeable blades and finally the third ones for the quick fastening of the aforementioned foldable flanges based on magnets and drills combined with each other and with the cover and the leaves in question. (Machine-translation by Google Translate, not legally binding)