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Priority to ES136815UpriorityCriticalpatent/ES136815U/en
Publication of ES136815UpublicationCriticalpatent/ES136815U/en
Cardboard box, of the type of which are integrated by a single sheet or sheet of cardboard formed by die, essentially characterized by the two long bands like tabs, which are prolongation of the longitudinal sides, so that when they bend they form the end walls or end sides of the box, each have a notch that deepens to a little more or less half of its width, said notches having a straight edge and perpendicular to the major sides while the other edge of each notch, takes a curved shape by initiating one of said notches in the lower edge of the flange of each pair, while in the other flange of said notch it starts in the upper edge, so that the flanges can be crossed and a notch and another, joining the two tabs that constitute the internal frame of each head, which are completed later placing such prototypes on horseback background actions. (Machine-translation by Google Translate, not legally binding)
ES136815U1968-03-071968-03-07Carton box. (Machine-translation by Google Translate, not legally binding)
PendingES136815U
(en)
A method of making a tubular member for a heat exchanger or similar from a plate of substantially flat material. (Machine-translation by Google Translate, not legally binding)