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Application filed by В.Г. ШиршовfiledCriticalВ.Г. Ширшов
Priority to SU3633919/24ApriorityCriticalpatent/SU1170833A1/en
Application grantedgrantedCritical
Publication of RU1170833CpublicationCriticalpatent/RU1170833C/en
Publication of SU1170833A1publicationCriticalpatent/SU1170833A1/en