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Priority to JP1978138483UpriorityCriticalpatent/JPS5824676Y2/ja
Priority to US06/081,590prioritypatent/US4272085A/en
Publication of JPS5555661UpublicationCriticalpatent/JPS5555661U/ja
Application grantedgrantedCritical
Publication of JPS5824676Y2publicationCriticalpatent/JPS5824676Y2/ja