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Application filed by Viktor D Baranenko, Nikolaj P Butrij, Bogdan I CharivfiledCriticalViktor D Baranenko
Priority to CS817294ApriorityCriticalpatent/CS237979B1/en
Publication of CS729481A1publicationCriticalpatent/CS729481A1/en
Publication of CS237979B1publicationCriticalpatent/CS237979B1/en