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GOSTI TITO
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GOSTI TITO
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Priority to ES0000294UpriorityCriticalpatent/ES294Y/en
Publication of ES294UpublicationCriticalpatent/ES294U/en
Application grantedgrantedCritical
Publication of ES294YpublicationCriticalpatent/ES294Y/en
An envelope model for correspondence that can be easily opened by the recipient without having to resort to sharp instruments and without damaging the contents of the envelope, which is characterized by two lines of small perforations or climbs next to one of the edges of the envelope, and one of which is practiced in one of the folding ears and the other on the bottom part of the envelope, being both parallel to each other and equidistant from the edge in question, in such a way that, without folding the ears of the paper to form the envelope, are the two lines of climbing overlapped, constituting the part that has to be torn to open the envelope. (Machine-translation by Google Translate, not legally binding)
ES0000294U1930-11-081930-11-08
Enhancements to easy-open mail envelopes.
ExpiredES294Y
(en)
Improvements to devices for folding sheets of paper, inserting them into envelopes, retracting the legs of the envelopes or closing the envelopes and then stamping them