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Priority to ES0032026UpriorityCriticalpatent/ES32026Y/es
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Publication of ES32026YpublicationCriticalpatent/ES32026Y/es
Un nuevo modelo de sobre inviolable, caracterizado la primera variante por que los extremos de las cuatro solapas que forman el sobre son tangentes entre sí, y la inferior y superior tienen sus bordes cortados onduladamente, estando dichas solapas pegadas solamente sobre la superficie del forro.
ES0032026U1952-07-211952-07-21Modelo de sobre inviolable
ExpiredES32026Y
(es)