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Application filed by Josef Smisek, Jaroslav Halouska, Karel Blesik, Oldrich SedlacekfiledCriticalJosef Smisek
Priority to CS873696ApriorityCriticalpatent/CS268258B1/cs
Publication of CS369687A1publicationCriticalpatent/CS369687A1/cs
Publication of CS268258B1publicationCriticalpatent/CS268258B1/cs