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Application filed by Zdenek Ing Fojtik, Hynek Prom Fyzik BrazdafiledCriticalZdenek Ing Fojtik
Priority to CS858449ApriorityCriticalpatent/CS259671B1/en
Publication of CS844985A1publicationCriticalpatent/CS844985A1/en
Publication of CS259671B1publicationCriticalpatent/CS259671B1/en