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Priority to JP1977113388UpriorityCriticalpatent/JPS5740931Y2/ja
Priority to US05/867,179prioritypatent/US4165699A/en
Publication of JPS5440760UpublicationCriticalpatent/JPS5440760U/ja
Application grantedgrantedCritical
Publication of JPS5740931Y2publicationCriticalpatent/JPS5740931Y2/ja