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Application filed by Glowny Instytut GornictwafiledCriticalGlowny Instytut Gornictwa
Priority to PL30060493ApriorityCriticalpatent/PL171486B1/en
Publication of PL300604A1publicationCriticalpatent/PL300604A1/en
Publication of PL171486B1publicationCriticalpatent/PL171486B1/en