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Priority to JP1990052967UpriorityCriticalpatent/JP2528871Y2/ja
Priority to DE4116344Aprioritypatent/DE4116344A1/de
Priority to US07/705,022prioritypatent/US5153801A/en
Publication of JPH0412168UpublicationCriticalpatent/JPH0412168U/ja
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Publication of JP2528871Y2publicationCriticalpatent/JP2528871Y2/ja