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Priority to JP1985070196UpriorityCriticalpatent/JPH056208Y2/ja
Priority to US06/862,255prioritypatent/US4708365A/en
Publication of JPS61185646UpublicationCriticalpatent/JPS61185646U/ja
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Publication of JPH056208Y2publicationCriticalpatent/JPH056208Y2/ja