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Application filed by Glowny Instytut GornictwafiledCriticalGlowny Instytut Gornictwa
Priority to PL24792984ApriorityCriticalpatent/PL143204B1/en
Publication of PL247929A2publicationCriticalpatent/PL247929A2/en
Publication of PL143204B1publicationCriticalpatent/PL143204B1/en