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Priority to JP1987032474UpriorityCriticalpatent/JPH0451444Y2/ja
Priority to US07/162,999prioritypatent/US4875119A/en
Priority to CN88101132.0Aprioritypatent/CN1009137B/zh
Publication of JPS63140606UpublicationCriticalpatent/JPS63140606U/ja
Application grantedgrantedCritical
Publication of JPH0451444Y2publicationCriticalpatent/JPH0451444Y2/ja