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Application filed by Josef Malina, Miloslav Pantucek, Vlastimil HladikfiledCriticalJosef Malina
Priority to CS849714ApriorityCriticalpatent/CS244725B1/en
Publication of CS971484A1publicationCriticalpatent/CS971484A1/en
Publication of CS244725B1publicationCriticalpatent/CS244725B1/en