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Priority to JP1990022416UpriorityCriticalpatent/JP2528130Y2/ja
Priority to US07/664,621prioritypatent/US5141133A/en
Publication of JPH0372621UpublicationCriticalpatent/JPH0372621U/ja
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Publication of JP2528130Y2publicationCriticalpatent/JP2528130Y2/ja