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Application filed by Ladislav Gonsior, Kvetoslav Ing Zalud, Novotny Eduard, Jiri KoudelafiledCriticalLadislav Gonsior
Priority to CS872450ApriorityCriticalpatent/CS259991B1/cs
Publication of CS245087A1publicationCriticalpatent/CS245087A1/cs
Publication of CS259991B1publicationCriticalpatent/CS259991B1/cs