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Priority to JP1990089120UpriorityCriticalpatent/JP2557116Y2/ja
Priority to US07/734,663prioritypatent/US5110030A/en
Priority to KR1019910013624Aprioritypatent/KR0179367B1/ko
Publication of JPH0445674UpublicationCriticalpatent/JPH0445674U/ja
Application grantedgrantedCritical
Publication of JP2557116Y2publicationCriticalpatent/JP2557116Y2/ja
