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Application filed by Josef Kolarik, Vojtech Otasek, Jiri VohralikfiledCriticalJosef Kolarik
Priority to CS873485ApriorityCriticalpatent/CS260091B1/en
Publication of CS348587A1publicationCriticalpatent/CS348587A1/en
Publication of CS260091B1publicationCriticalpatent/CS260091B1/en