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Application filed by А.В. Добромыслова, Б.А. ДогадкинfiledCriticalА.В. Добромыслова
Priority to SU47218ApriorityCriticalpatent/SU76608A1/ru
Application grantedgrantedCritical
Publication of SU76608A1publicationCriticalpatent/SU76608A1/ru