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Application filed by Durcova Olga, Anna Ing Diacikova, Ondrejmiska Koloman, Szentivanyi NorbertfiledCriticalDurcova Olga
Priority to CS882541ApriorityCriticalpatent/CS270142B1/cs
Publication of CS254188A1publicationCriticalpatent/CS254188A1/cs
Publication of CS270142B1publicationCriticalpatent/CS270142B1/cs