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Application filed by В.П. Лазарев, Н.Е. ОдоевцевfiledCriticalВ.П. Лазарев
Priority to SU130998ApriorityCriticalpatent/SU34989A1/en
Application grantedgrantedCritical
Publication of SU34989A1publicationCriticalpatent/SU34989A1/en