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Publication of SU407648A1publicationCriticalpatent/SU407648A1/ru
Priority claimed from SU1784746Aexternal-prioritypatent/SU407648A1/ru
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Priority to SU1784746ApriorityCriticalpatent/SU407648A1/ru
Application grantedgrantedCritical
Publication of SU407648A2publicationCriticalpatent/SU407648A2/ru