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Priority to JP12660376UpriorityCriticalpatent/JPS568774Y2/ja
Priority to GB3935977Aprioritypatent/GB1556318A/en
Publication of JPS5344826UpublicationCriticalpatent/JPS5344826U/ja
Application grantedgrantedCritical
Publication of JPS568774Y2publicationCriticalpatent/JPS568774Y2/ja