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Publication of SU400376A1publicationCriticalpatent/SU400376A1/ru
Priority claimed from SU1775480Aexternal-prioritypatent/SU400376A1/ru
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Priority to SU1775480ApriorityCriticalpatent/SU400376A1/ru
Application grantedgrantedCritical
Publication of SU400376A2publicationCriticalpatent/SU400376A2/ru