Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Individual
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Individual
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Application filed by IndividualfiledCriticalIndividual
Priority to ES93280UpriorityCriticalpatent/ES93280U/en
Publication of ES93280UpublicationCriticalpatent/ES93280U/en
For a "letter-envelope", characterized by a sheet of paper, cardboard or appropriate material, rectangular in size and shape, which bears on its upper part an elongated shaped bead to be folded, and on its right side, halfway of the development, a prolongation also rectangular elongated vertically, so that when being divided into four parts, two vertical rectangles are formed, so that folded, already formed the envelope on its back face, is its closed behind perfectly. (Machine-translation by Google Translate, not legally binding)
ES93280U1962-05-241962-05-24Letter about (Machine-translation by Google Translate, not legally binding)
PendingES93280U
(en)