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Application filed by Karel Bures, Jan Sila, Ladislav Tmej, Emil DolejsifiledCriticalKarel Bures
Priority to CS872289ApriorityCriticalpatent/CS271411B1/cs
Publication of CS228987A1publicationCriticalpatent/CS228987A1/cs
Publication of CS271411B1publicationCriticalpatent/CS271411B1/cs