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Priority to ES1967134030UpriorityCriticalpatent/ES134030Y/en
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Publication of ES134030YpublicationCriticalpatent/ES134030Y/en
"Perfected cardboard box", of the type consisting of a single sheet of cardboard, with the corresponding fold lines composed of transverse and longitudinal slits, essentially characterized in that on each of the opposite sides, and in its center, is equipped with a triangular recess, as a complement to a square, whose other triangular area of the cardboard sheet, which is comprised between two split fold lines, forming an angle, is marked in turn by a perpendicular line of crease , drawn from the vertex to the opposite side, forming an axis of symmetry, such that these areas are converted by bending into bellows that are introduced inside the box and that, being joined with self-adhesive parts, allow a half of the box can be housed inside the other half, after its tabs, tabs and sides have been properly folded and joined, to mount the box. (Machine-translation by Google Translate, not legally binding)