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Priority to JP1986143416UpriorityCriticalpatent/JPS6350699U/ja
Priority to KR1019870001380Aprioritypatent/KR930008692B1/ko
Priority to CN87100891Aprioritypatent/CN1007795B/zh
Priority to US07/017,345prioritypatent/US4872293A/en
Publication of JPS6350699UpublicationCriticalpatent/JPS6350699U/ja
Priority to US07/367,714prioritypatent/US5018317A/en