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Application filed by Jaroslav Vanicek, Frantisek Dipl Tech BulicekfiledCriticalJaroslav Vanicek
Priority to CS825291ApriorityCriticalpatent/CS237579B1/cs
Publication of CS529182A1publicationCriticalpatent/CS529182A1/cs
Publication of CS237579B1publicationCriticalpatent/CS237579B1/cs