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Priority to JP19211182UpriorityCriticalpatent/JPS5998497U/ja
Priority to US06/560,155prioritypatent/US4619175A/en
Publication of JPS5998497UpublicationCriticalpatent/JPS5998497U/ja
Application grantedgrantedCritical
Publication of JPS6246238Y2publicationCriticalpatent/JPS6246238Y2/ja