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Priority to ES0316288ApriorityCriticalpatent/ES316288A1/en
Publication of ES316288A1publicationCriticalpatent/ES316288A1/en
Improvements in the manufacture of reinforced case-boxes, which are essentially characterized by taking as a basis for the formation of your body, a square quadrangular sheet of semi-rigid material corresponding to the two largest faces and the bottom of the case, this sheet optionally containing end part destined to the flap that must serve in its closing case to it, splitting, in addition, to obtain the two remaining narrow faces of the box, two strips conveniently sized also of semirigid material, and two other strips identical to the aforementioned but of more rigid material, intended for the individual internal reinforcement of each of the first, being in turn these last two rigid strips for heavy duty cases, by a single strip in "U" equipped with a length equivalent to that of the two narrow faces and bottom of the case to which it even reinforces. (Machine-translation by Google Translate, not legally binding)
ES0316288A1965-08-091965-08-09Improvements in the manufacture of reinforced boxes. (Machine-translation by Google Translate, not legally binding)
ExpiredES316288A1
(en)