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Priority to SU1677298ApriorityCriticalpatent/SU416172A1/ru
Priority claimed from SU1677298Aexternal-prioritypatent/SU416172A1/ru
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Publication of SU416172A2publicationCriticalpatent/SU416172A2/ru
Publication of SU416172A1publicationCriticalpatent/SU416172A1/ru