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Publication of SU14215A1publicationCriticalpatent/SU14215A1/ru
Application filed by А.С. СтепановfiledCriticalА.С. Степанов
Priority to SU37630ApriorityCriticalpatent/SU60463A1/ru
Priority claimed from SU37630Aexternal-prioritypatent/SU60463A1/ru
Application grantedgrantedCritical
Publication of SU60463A1publicationCriticalpatent/SU60463A1/ru