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Priority to JP5662580UpriorityCriticalpatent/JPS6130914Y2/ja
Priority to US06/256,575prioritypatent/US4438836A/en
Publication of JPS56157429UpublicationCriticalpatent/JPS56157429U/ja
Application grantedgrantedCritical
Publication of JPS6130914Y2publicationCriticalpatent/JPS6130914Y2/ja