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Application filed by Miechowice Kopalnia Wegla KamifiledCriticalMiechowice Kopalnia Wegla Kami
Priority to PL29358692ApriorityCriticalpatent/PL167886B1/en
Publication of PL293586A1publicationCriticalpatent/PL293586A1/en
Publication of PL167886B1publicationCriticalpatent/PL167886B1/en