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Application filed by Kopalnia Wegla Kamiennego ManifiledCriticalKopalnia Wegla Kamiennego Mani
Priority to PL20770278ApriorityCriticalpatent/PL109607B1/pl
Publication of PL207702A1publicationCriticalpatent/PL207702A1/pl
Publication of PL109607B1publicationCriticalpatent/PL109607B1/pl