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Priority to JP8876687UpriorityCriticalpatent/JPH0612972Y2/ja
Priority to US07/200,432prioritypatent/US4858895A/en
Publication of JPS63196706UpublicationCriticalpatent/JPS63196706U/ja
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Publication of JPH0612972Y2publicationCriticalpatent/JPH0612972Y2/ja