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Priority to JP2790190UpriorityCriticalpatent/JP2521001Y2/ja
Priority to US07/671,008prioritypatent/US5141264A/en
Priority to KR2019910003637Uprioritypatent/KR940006956Y1/ko
Publication of JPH03118386UpublicationCriticalpatent/JPH03118386U/ja
Application grantedgrantedCritical
Publication of JP2521001Y2publicationCriticalpatent/JP2521001Y2/ja
