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Application filed by Intreprinderea "Didactica",RofiledCriticalIntreprinderea "Didactica",Ro
Priority to RO82109011ApriorityCriticalpatent/RO85678A2/ro
Publication of RO85678B1publicationCriticalpatent/RO85678B1/ro
Publication of RO85678A2publicationCriticalpatent/RO85678A2/ro