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Priority to JP1987052689UpriorityCriticalpatent/JPH0727537Y2/ja
Priority to US07/179,631prioritypatent/US4970505A/en
Publication of JPS63160619UpublicationCriticalpatent/JPS63160619U/ja
Application grantedgrantedCritical
Publication of JPH0727537Y2publicationCriticalpatent/JPH0727537Y2/ja
