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Application filed by Kopalnia Wegla Kamiennego PolsfiledCriticalKopalnia Wegla Kamiennego Pols
Priority to PL20600578ApriorityCriticalpatent/PL107217B1/pl
Publication of PL206005A1publicationCriticalpatent/PL206005A1/pl
Publication of PL107217B1publicationCriticalpatent/PL107217B1/pl