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Publication of ES258894A3publicationCriticalpatent/ES258894A3/en
Method of manufacture of over-letters for correspondence characterized because it has a sheet of appropriate size and on it is boxed some vertical and horizontal fold that subdivide it into four equal parts. (Machine-translation by Google Translate, not legally binding)
ES0258894AMethod for manufacturing over-letters for correspondence (Machine-translation by Google Translate, not legally binding)
ExpiredES258894A3
(en)