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Priority to ES1980489111ApriorityCriticalpatent/ES489111A0/es
Priority to IT67747/80Aprioritypatent/IT1128293B/it
Priority to PT71238Aprioritypatent/PT71238A/pt
Publication of ES8205504A2publicationCriticalpatent/ES8205504A2/es
Publication of ES489111A0publicationCriticalpatent/ES489111A0/es