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Priority to JP13808280UpriorityCriticalpatent/JPS6242202Y2/ja
Priority to US06/306,684prioritypatent/US4430680A/en
Publication of JPS5761262UpublicationCriticalpatent/JPS5761262U/ja
Application grantedgrantedCritical
Publication of JPS6242202Y2publicationCriticalpatent/JPS6242202Y2/ja