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Priority to JP12916287UpriorityCriticalpatent/JPH0433264Y2/ja
Priority to GB8820111Aprioritypatent/GB2209147B/en
Priority to KR1019880010935Aprioritypatent/KR890003461A/ko
Publication of JPS6435871UpublicationCriticalpatent/JPS6435871U/ja
Priority to US07/447,037prioritypatent/US5088870A/en
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Publication of JPH0433264Y2publicationCriticalpatent/JPH0433264Y2/ja