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Publication of SU2829A1publicationCriticalpatent/SU2829A1/ru
Application filed by И.С. Бурденев, А.И. Головастиков, А.М. КовадлоfiledCriticalИ.С. Бурденев
Priority to SU4027ApriorityCriticalpatent/SU67103A1/ru
Application grantedgrantedCritical
Publication of SU67103A1publicationCriticalpatent/SU67103A1/ru