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Application filed by Inst Szkla I Ceramiki OddzialfiledCriticalInst Szkla I Ceramiki Oddzial
Priority to PL28800390ApriorityCriticalpatent/PL163586B1/en
Publication of PL288003A1publicationCriticalpatent/PL288003A1/en
Publication of PL163586B1publicationCriticalpatent/PL163586B1/en