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Application filed by Glowny Instytut GornictwafiledCriticalGlowny Instytut Gornictwa
Priority to PL23872282ApriorityCriticalpatent/PL134217B1/en
Publication of PL238722A2publicationCriticalpatent/PL238722A2/en
Publication of PL134217B1publicationCriticalpatent/PL134217B1/en