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Priority to JP1978078317UpriorityCriticalpatent/JPS5732045Y2/ja
Priority to US06/010,377prioritypatent/US4220353A/en
Publication of JPS54179623UpublicationCriticalpatent/JPS54179623U/ja
Application grantedgrantedCritical
Publication of JPS5732045Y2publicationCriticalpatent/JPS5732045Y2/ja