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Priority to SU1775585ApriorityCriticalpatent/SU426914A1/ru
Priority claimed from SU1775585Aexternal-prioritypatent/SU426914A1/ru
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Publication of SU426914A2publicationCriticalpatent/SU426914A2/ru
Publication of SU426914A1publicationCriticalpatent/SU426914A1/ru