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Application filed by Glowny Instytut GornictwafiledCriticalGlowny Instytut Gornictwa
Priority to PL24259383ApriorityCriticalpatent/PL138763B1/en
Publication of PL242593A2publicationCriticalpatent/PL242593A2/en
Publication of PL138763B1publicationCriticalpatent/PL138763B1/en