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Application filed by Zdenek Trnovsky, Jaroslav Falta, Ludek HamacekfiledCriticalZdenek Trnovsky
Priority to CS855139ApriorityCriticalpatent/CS255411B1/en
Publication of CS513985A1publicationCriticalpatent/CS513985A1/en
Publication of CS255411B1publicationCriticalpatent/CS255411B1/en