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Application filed by Gwarectwo Budownictwa GorniczefiledCriticalGwarectwo Budownictwa Gornicze
Priority to PL25453785ApriorityCriticalpatent/PL147886B1/en
Publication of PL254537A1publicationCriticalpatent/PL254537A1/en
Publication of PL147886B1publicationCriticalpatent/PL147886B1/en