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Application filed by Ladislav Horky, Karel Ing Oberherr, Ladislav VlkfiledCriticalLadislav Horky
Priority to CS878016ApriorityCriticalpatent/CS267228B1/en
Publication of CS801687A1publicationCriticalpatent/CS801687A1/en
Publication of CS267228B1publicationCriticalpatent/CS267228B1/en