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Application filed by Nemecek Miloslav, Karel Cervenka, Oskar Kovarik, Josef SumerafiledCriticalNemecek Miloslav
Priority to CS873143ApriorityCriticalpatent/CS267893B1/en
Publication of CS314387A1publicationCriticalpatent/CS314387A1/en
Publication of CS267893B1publicationCriticalpatent/CS267893B1/en