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Priority to JP1985131169UpriorityCriticalpatent/JPH0111550Y2/ja
Priority to US06/897,859prioritypatent/US4727759A/en
Publication of JPS6237525UpublicationCriticalpatent/JPS6237525U/ja
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Publication of JPH0111550Y2publicationCriticalpatent/JPH0111550Y2/ja