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Priority to SU1694564ApriorityCriticalpatent/SU415596A1/ru
Priority claimed from SU1694564Aexternal-prioritypatent/SU415596A1/ru
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Publication of SU415596A2publicationCriticalpatent/SU415596A2/ru
Publication of SU415596A1publicationCriticalpatent/SU415596A1/ru