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Application filed by Josef Stary, Zdenek Svec, Vaclav Divis, Radovan VoleskyfiledCriticalJosef Stary
Priority to CS875234ApriorityCriticalpatent/CS263856B1/en
Publication of CS523487A1publicationCriticalpatent/CS523487A1/en
Publication of CS263856B1publicationCriticalpatent/CS263856B1/en