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Application filed by Jaroslav Holubec, Stanislav Mrskos, Jiri HavlasfiledCriticalJaroslav Holubec
Priority to CS881003ApriorityCriticalpatent/CS268949B1/cs
Publication of CS100388A1publicationCriticalpatent/CS100388A1/cs
Publication of CS268949B1publicationCriticalpatent/CS268949B1/cs