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Application filed by С.С. Брюхоненко, В.Д. ЯнковскийfiledCriticalС.С. Брюхоненко
Priority to SU121339ApriorityCriticalpatent/SU39934A1/ru
Application grantedgrantedCritical
Publication of SU39934A1publicationCriticalpatent/SU39934A1/ru