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Application filed by Glowny Instytut GornictwafiledCriticalGlowny Instytut Gornictwa
Priority to PL27068288ApriorityCriticalpatent/PL155175B1/en
Publication of PL270682A1publicationCriticalpatent/PL270682A1/en
Publication of PL155175B1publicationCriticalpatent/PL155175B1/en