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Application filed by И.Б. Блюмберг, В.Н. ХарченкоfiledCriticalИ.Б. Блюмберг
Priority to SU152161ApriorityCriticalpatent/SU42419A1/ru
Application grantedgrantedCritical
Publication of SU42419A1publicationCriticalpatent/SU42419A1/ru