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Application filed by Н.Н. Колосов, А.Б. ШтабинскийfiledCriticalН.Н. Колосов
Priority to SU356ApriorityCriticalpatent/SU73845A1/ru
Application grantedgrantedCritical
Publication of SU73845A1publicationCriticalpatent/SU73845A1/ru