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Application filed by Inst Szkla I Ceramiki W WarszafiledCriticalInst Szkla I Ceramiki W Warsza
Priority to PL26929587ApriorityCriticalpatent/PL157091B1/en
Publication of PL269295A1publicationCriticalpatent/PL269295A1/en
Publication of PL157091B1publicationCriticalpatent/PL157091B1/en