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Application filed by Г.Г. Гилельс, А.В. КоренманfiledCriticalГ.Г. Гилельс
Priority to SU113259ApriorityCriticalpatent/SU39705A1/en
Application grantedgrantedCritical
Publication of SU39705A1publicationCriticalpatent/SU39705A1/en