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Application filed by Gorgon Oldrich, Josef Zivansky, Kopelent JindrichfiledCriticalGorgon Oldrich
Priority to CS849241ApriorityCriticalpatent/CS253074B1/en
Publication of CS924184A1publicationCriticalpatent/CS924184A1/en
Publication of CS253074B1publicationCriticalpatent/CS253074B1/en