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Application filed by К.А. Андрианов, В.И. Волошинов, М.В. СоболевскийfiledCriticalК.А. Андрианов
Priority to SU11069ApriorityCriticalpatent/SU73567A1/ru
Application grantedgrantedCritical
Publication of SU73567A1publicationCriticalpatent/SU73567A1/ru