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Application filed by Glowny Instytut GornictwafiledCriticalGlowny Instytut Gornictwa
Priority to PL20899778ApriorityCriticalpatent/PL112402B1/en
Publication of PL208997A1publicationCriticalpatent/PL208997A1/en
Publication of PL112402B1publicationCriticalpatent/PL112402B1/en