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Application filed by Stanislav Coufal, Ladislav Ing SovafiledCriticalStanislav Coufal
Priority to CS886500ApriorityCriticalpatent/CS270698B1/cs
Publication of CS650088A1publicationCriticalpatent/CS650088A1/cs
Publication of CS270698B1publicationCriticalpatent/CS270698B1/cs