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Application filed by Nowy Wirek Kopalnia Wegla KamifiledCriticalNowy Wirek Kopalnia Wegla Kami
Priority to PL29303791ApriorityCriticalpatent/PL167255B1/en
Publication of PL293037A1publicationCriticalpatent/PL293037A1/en
Publication of PL167255B1publicationCriticalpatent/PL167255B1/en