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Application filed by Glowny Instytut GornictwafiledCriticalGlowny Instytut Gornictwa
Priority to PL23643182ApriorityCriticalpatent/PL129646B1/en
Publication of PL236431A2publicationCriticalpatent/PL236431A2/en
Publication of PL129646B1publicationCriticalpatent/PL129646B1/en