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Priority to JP1988043378UpriorityCriticalpatent/JPH0519666Y2/ja
Priority to US07/323,409prioritypatent/US4958789A/en
Publication of JPH01146084UpublicationCriticalpatent/JPH01146084U/ja
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Publication of JPH0519666Y2publicationCriticalpatent/JPH0519666Y2/ja