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Application filed by Zabrzanskie Gwarectwo WeglowefiledCriticalZabrzanskie Gwarectwo Weglowe
Priority to PL25322985ApriorityCriticalpatent/PL147820B1/en
Publication of PL253229A1publicationCriticalpatent/PL253229A1/en
Publication of PL147820B1publicationCriticalpatent/PL147820B1/en