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Application grantedgrantedCritical
Publication of SU16885A1publicationCriticalpatent/SU16885A1/ru
Application filed by В.Г. КошелевfiledCriticalВ.Г. Кошелев
Priority to SU24077ApriorityCriticalpatent/SU58067A1/ru
Priority claimed from SU24077Aexternal-prioritypatent/SU58067A1/ru
Publication of SU58067A1publicationCriticalpatent/SU58067A1/ru