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Application filed by Glowny Instytut Gornictwa, B P Koksoprojekt Sp Z OofiledCriticalGlowny Instytut Gornictwa
Priority to PL30338494ApriorityCriticalpatent/PL171522B1/en
Publication of PL303384A1publicationCriticalpatent/PL303384A1/en
Publication of PL171522B1publicationCriticalpatent/PL171522B1/en