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Application filed by Karel Bures, Jan Sila, Ladislav Tmej, Emil DolejsifiledCriticalKarel Bures
Priority to CS872298ApriorityCriticalpatent/CS271007B1/en
Publication of CS229887A1publicationCriticalpatent/CS229887A1/en
Publication of CS271007B1publicationCriticalpatent/CS271007B1/en