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Priority to JP1985007897UpriorityCriticalpatent/JPH0326363Y2/ja
Priority to US06/824,476prioritypatent/US4742988A/en
Publication of JPS61124774UpublicationCriticalpatent/JPS61124774U/ja
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Publication of JPH0326363Y2publicationCriticalpatent/JPH0326363Y2/ja