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Individual
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Individual
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Application filed by IndividualfiledCriticalIndividual
Priority to ES0004253UpriorityCriticalpatent/ES4253Y/en
Publication of ES4253UpublicationCriticalpatent/ES4253U/en
Application grantedgrantedCritical
Publication of ES4253YpublicationCriticalpatent/ES4253Y/en
A new inviolable envelope, characterized in that its two side flaps are cut so that when folded they form a right angle with the side and the base line of the envelope, thus eliminating the current flap below and its subsequent adhesions, the closure equivalent to which is replaced by a seam joining the base line of both side flaps to the body of the envelope and which is covered with a longitudinal flange that to this effect protrudes from the latter. (Machine-translation by Google Translate, not legally binding)