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Priority to JP1979070335UpriorityCriticalpatent/JPS636779Y2/ja
Priority to US06/145,864prioritypatent/US4322758A/en
Publication of JPS5635676UpublicationCriticalpatent/JPS5635676U/ja
Application grantedgrantedCritical
Publication of JPS636779Y2publicationCriticalpatent/JPS636779Y2/ja