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Publication date
Application filed by Д.В. Тищенко, А.Н. ЧурбаковfiledCriticalД.В. Тищенко
Priority to SU??-2403ApriorityCriticalpatent/SU51994A1/ru
Application grantedgrantedCritical
Publication of SU51994A1publicationCriticalpatent/SU51994A1/ru