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Application filed by Glowny Instytut GornictwafiledCriticalGlowny Instytut Gornictwa
Priority to PL30222794ApriorityCriticalpatent/PL172884B1/en
Publication of PL302227A1publicationCriticalpatent/PL302227A1/en
Publication of PL172884B1publicationCriticalpatent/PL172884B1/en