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Application filed by Chrenko Vladimir, Viliam Ing Oravec, Proksa Bohumil, Varga Ivan, Zdeno Dr Ing Drsc VotickyfiledCriticalChrenko Vladimir
Priority to CS858794ApriorityCriticalpatent/CS252039B1/en
Publication of CS879485A1publicationCriticalpatent/CS879485A1/en
Publication of CS252039B1publicationCriticalpatent/CS252039B1/en