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Publication of SU401362A1publicationCriticalpatent/SU401362A1/ru
Priority claimed from SU1748149Aexternal-prioritypatent/SU401362A1/ru
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Priority to SU1748149ApriorityCriticalpatent/SU401362A1/ru
Application grantedgrantedCritical
Publication of SU401362A2publicationCriticalpatent/SU401362A2/ru