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Application filed by Petr Ing Pisvejc, Josef Pesek, Vaclav MacourekfiledCriticalPetr Ing Pisvejc
Priority to CS879190ApriorityCriticalpatent/CS267138B1/en
Publication of CS919087A1publicationCriticalpatent/CS919087A1/en
Publication of CS267138B1publicationCriticalpatent/CS267138B1/en