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Application filed by Josef Smisek, Oldrich Sedlacek, Karel KessnerfiledCriticalJosef Smisek
Priority to CS878411ApriorityCriticalpatent/CS264390B1/en
Publication of CS841187A1publicationCriticalpatent/CS841187A1/en
Publication of CS264390B1publicationCriticalpatent/CS264390B1/en