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Application filed by Glowny Instytut GornictwafiledCriticalGlowny Instytut Gornictwa
Priority to PL20338677ApriorityCriticalpatent/PL107080B1/pl
Publication of PL203386A1publicationCriticalpatent/PL203386A1/pl
Publication of PL107080B1publicationCriticalpatent/PL107080B1/pl