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Application filed by Hradsky Josef, Miroslav Ing Hrazdira, Zdenek Ing Krestak, Novak JaroslavfiledCriticalHradsky Josef
Priority to CS842382ApriorityCriticalpatent/CS253054B1/en
Publication of CS238284A1publicationCriticalpatent/CS238284A1/en
Publication of CS253054B1publicationCriticalpatent/CS253054B1/en