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Priority to JP1990050751UpriorityCriticalpatent/JP2559062Y2/ja
Priority to US07/690,243prioritypatent/US5113815A/en
Publication of JPH0411260UpublicationCriticalpatent/JPH0411260U/ja
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Publication of JP2559062Y2publicationCriticalpatent/JP2559062Y2/ja
