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Application filed by Glowny Instytut GornictwafiledCriticalGlowny Instytut Gornictwa
Priority to PL24814684ApriorityCriticalpatent/PL136166B2/en
Publication of PL248146A2publicationCriticalpatent/PL248146A2/en
Publication of PL136166B2publicationCriticalpatent/PL136166B2/en