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Application filed by Ульяновский политехнический институтfiledCriticalУльяновский политехнический институт
Priority to SU2660784/21ApriorityCriticalpatent/RU884544C/ru
Priority claimed from SU2660784/21Aexternal-prioritypatent/RU884544C/ru
Application grantedgrantedCritical
Publication of SU884544A1publicationCriticalpatent/SU884544A1/ru
Publication of RU884544CpublicationCriticalpatent/RU884544C/ru