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Priority to JP1986176633UpriorityCriticalpatent/JPH0628305Y2/ja
Priority to KR1019870010224Aprioritypatent/KR910007038B1/ko
Priority to US07/102,575prioritypatent/US4876441A/en
Publication of JPS6382579UpublicationCriticalpatent/JPS6382579U/ja
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Publication of JPH0628305Y2publicationCriticalpatent/JPH0628305Y2/ja