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Application filed by Kopalnia Wegla Kamiennego WujefiledCriticalKopalnia Wegla Kamiennego Wuje
Priority to PL24258983ApriorityCriticalpatent/PL143238B1/en
Publication of PL242589A1publicationCriticalpatent/PL242589A1/en
Publication of PL143238B1publicationCriticalpatent/PL143238B1/en