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Publication of SU393302A1publicationCriticalpatent/SU393302A1/ru
Priority claimed from SU1739966Aexternal-prioritypatent/SU393302A1/ru
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Priority to SU1739966ApriorityCriticalpatent/SU393302A1/ru
Application grantedgrantedCritical
Publication of SU393302A2publicationCriticalpatent/SU393302A2/ru