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Priority to JP2598171UpriorityCriticalpatent/JPS5042886Y2/ja
Priority to GB5843871Aprioritypatent/GB1329907A/en
Publication of JPS4723508UpublicationCriticalpatent/JPS4723508U/ja
Application grantedgrantedCritical
Publication of JPS5042886Y2publicationCriticalpatent/JPS5042886Y2/ja