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Application filed by Sladky Vaclav, Petr JirasekfiledCriticalSladky Vaclav
Priority to CS881723ApriorityCriticalpatent/CS264650B1/cs
Publication of CS172388A1publicationCriticalpatent/CS172388A1/cs
Publication of CS264650B1publicationCriticalpatent/CS264650B1/cs