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Priority to JP1976101252UpriorityCriticalpatent/JPS5525260Y2/ja
Priority to US05/817,441prioritypatent/US4145015A/en
Publication of JPS5327091UpublicationCriticalpatent/JPS5327091U/ja
Application grantedgrantedCritical
Publication of JPS5525260Y2publicationCriticalpatent/JPS5525260Y2/ja