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Application filed by Б.Ф. Зайончковский, А.С. Шкляр, р А.С. ШклfiledCriticalБ.Ф. Зайончковский
Priority to SU018ApriorityCriticalpatent/SU77976A1/ru
Application grantedgrantedCritical
Publication of SU77976A1publicationCriticalpatent/SU77976A1/ru