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Priority to JP1976134160UpriorityCriticalpatent/JPS5643695Y2/ja
Priority to US05/834,497prioritypatent/US4160255A/en
Publication of JPS5351254UpublicationCriticalpatent/JPS5351254U/ja
Application grantedgrantedCritical
Publication of JPS5643695Y2publicationCriticalpatent/JPS5643695Y2/ja