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Application filed by Glowny Instytut GornictwafiledCriticalGlowny Instytut Gornictwa
Priority to PL25537185ApriorityCriticalpatent/PL148529B1/en
Publication of PL255371A2publicationCriticalpatent/PL255371A2/en
Publication of PL148529B1publicationCriticalpatent/PL148529B1/en