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Application filed by Lubomir Smykal, Karel SlezacekfiledCriticalLubomir Smykal
Priority to CS852998ApriorityCriticalpatent/CS259656B1/en
Publication of CS299885A1publicationCriticalpatent/CS299885A1/en
Publication of CS259656B1publicationCriticalpatent/CS259656B1/en