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Application filed by М.И. Выщепан, Д.М. ТерещенкоfiledCriticalМ.И. Выщепан
Priority to SU98513ApriorityCriticalpatent/SU31225A1/en
Application grantedgrantedCritical
Publication of SU31225A1publicationCriticalpatent/SU31225A1/en