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Application filed by Kopalnia Wegla Brunatnego AdamfiledCriticalKopalnia Wegla Brunatnego Adam
Priority to PL27399888ApriorityCriticalpatent/PL157366B1/en
Publication of PL273998A1publicationCriticalpatent/PL273998A1/en
Publication of PL157366B1publicationCriticalpatent/PL157366B1/en