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Priority to JP6087990UpriorityCriticalpatent/JPH0755992Y2/ja
Priority to US07/711,777prioritypatent/US5142740A/en
Publication of JPH0419295UpublicationCriticalpatent/JPH0419295U/ja
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Publication of JPH0755992Y2publicationCriticalpatent/JPH0755992Y2/ja