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Application filed by Rudolf Neubert, Ivan Sumny, Pavel Ing Mruzek, Rudolf NovalfiledCriticalRudolf Neubert
Priority to CS83641ApriorityCriticalpatent/CS230933B1/en
Publication of CS64183A1publicationCriticalpatent/CS64183A1/en
Publication of CS230933B1publicationCriticalpatent/CS230933B1/en