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Priority to JP1976130160UpriorityCriticalpatent/JPS569550Y2/ja
Priority to US05/835,207prioritypatent/US4135196A/en
Publication of JPS5347330UpublicationCriticalpatent/JPS5347330U/ja
Application grantedgrantedCritical
Publication of JPS569550Y2publicationCriticalpatent/JPS569550Y2/ja