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Publication of SU401408A1publicationCriticalpatent/SU401408A1/ru
Priority claimed from SU1844190Aexternal-prioritypatent/SU401408A1/ru
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Priority to SU1844190ApriorityCriticalpatent/SU401408A1/ru
Application grantedgrantedCritical
Publication of SU401408A2publicationCriticalpatent/SU401408A2/ru