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Priority to JP1988074689UpriorityCriticalpatent/JPH0716513Y2/ja
Priority to US03/360,879prioritypatent/US5040649A/en
Publication of JPH01176533UpublicationCriticalpatent/JPH01176533U/ja
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Publication of JPH0716513Y2publicationCriticalpatent/JPH0716513Y2/ja