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Priority to JP1990092285UpriorityCriticalpatent/JP2516058Y2/ja
Priority to KR1019910013176Aprioritypatent/KR940009372B1/ko
Publication of JPH0449494UpublicationCriticalpatent/JPH0449494U/ja
Priority to US08/213,978prioritypatent/US5395248A/en
Application grantedgrantedCritical
Publication of JP2516058Y2publicationCriticalpatent/JP2516058Y2/ja
