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Priority to JP12084879UpriorityCriticalpatent/JPS5812299Y2/ja
Priority to US06/107,047prioritypatent/US4319698A/en
Publication of JPS5641378UpublicationCriticalpatent/JPS5641378U/ja
Application grantedgrantedCritical
Publication of JPS5812299Y2publicationCriticalpatent/JPS5812299Y2/ja