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Application filed by Kopalnia Wegla Kamiennego WiecfiledCriticalKopalnia Wegla Kamiennego Wiec
Priority to PL25053484ApriorityCriticalpatent/PL144082B1/en
Publication of PL250534A1publicationCriticalpatent/PL250534A1/en
Publication of PL144082B1publicationCriticalpatent/PL144082B1/en