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Application filed by Alexandr M Fedorov, Jakov M Grosman, Alla K Kuznecova, Lidija N NaumovafiledCriticalAlexandr M Fedorov
Priority to CS845696ApriorityCriticalpatent/CS271060B1/en
Publication of CS569684A1publicationCriticalpatent/CS569684A1/en
Publication of CS271060B1publicationCriticalpatent/CS271060B1/en