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Application filed by А.Н. Ширяев, ев А.Н. ШирfiledCriticalА.Н. Ширяев
Priority to SU123773ApriorityCriticalpatent/SU35580A1/ru
Application grantedgrantedCritical
Publication of SU35580A1publicationCriticalpatent/SU35580A1/ru