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Application filed by Jiri Ing Krivanek, Klatil KarelfiledCriticalJiri Ing Krivanek
Priority to CS874779ApriorityCriticalpatent/CS270279B1/en
Publication of CS477987A1publicationCriticalpatent/CS477987A1/en
Publication of CS270279B1publicationCriticalpatent/CS270279B1/en