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Priority to JP1971024073UpriorityCriticalpatent/JPS5630877Y2/ja
Priority to US00239178Aprioritypatent/US3763305A/en
Publication of JPS4727828UpublicationCriticalpatent/JPS4727828U/ja
Application grantedgrantedCritical
Publication of JPS5630877Y2publicationCriticalpatent/JPS5630877Y2/ja