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Application filed by Н.В. Дудыкина, В.В. Первозванский, Ю.С. ЧельцоваfiledCriticalН.В. Дудыкина
Priority to SU372492ApriorityCriticalpatent/SU75436A1/en
Application grantedgrantedCritical
Publication of SU75436A1publicationCriticalpatent/SU75436A1/en