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Priority to JP1978161115UpriorityCriticalpatent/JPS6234598Y2/ja
Publication of JPS5576053UpublicationCriticalpatent/JPS5576053U/ja
Priority to US06/170,911prioritypatent/US4313741A/en
Application grantedgrantedCritical
Publication of JPS6234598Y2publicationCriticalpatent/JPS6234598Y2/ja