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Priority to JP5357672UpriorityCriticalpatent/JPS5214760Y2/ja
Priority to SU731876371Aprioritypatent/SU564782A3/ru
Publication of JPS4911032UpublicationCriticalpatent/JPS4911032U/ja
Application grantedgrantedCritical
Publication of JPS5214760Y2publicationCriticalpatent/JPS5214760Y2/ja