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Priority to JP13953181UpriorityCriticalpatent/JPS5847075U/ja
Priority to US06/418,192prioritypatent/US4467622A/en
Publication of JPS5847075UpublicationCriticalpatent/JPS5847075U/ja
Application grantedgrantedCritical
Publication of JPS6128996Y2publicationCriticalpatent/JPS6128996Y2/ja