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Application filed by Pavel Ing Valasek, Metodej Ing Snasel, Starek JirifiledCriticalPavel Ing Valasek
Priority to CS884315ApriorityCriticalpatent/CS269359B1/en
Publication of CS431588A1publicationCriticalpatent/CS431588A1/en
Publication of CS269359B1publicationCriticalpatent/CS269359B1/en