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Priority to JP1985001190UpriorityCriticalpatent/JPH044834Y2/ja
Priority to GB08504333Aprioritypatent/GB2155817B/en
Publication of JPS61118660UpublicationCriticalpatent/JPS61118660U/ja
Priority to US06/916,364prioritypatent/US4714200A/en
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Publication of JPH044834Y2publicationCriticalpatent/JPH044834Y2/ja