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Priority to JP2766888UpriorityCriticalpatent/JPH01131136U/ja
Priority to KR2019890000834Uprioritypatent/KR920005348Y1/ko
Priority to US07/317,485prioritypatent/US4895026A/en
Publication of JPH01131136UpublicationCriticalpatent/JPH01131136U/ja
