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Priority to JP1986201315UpriorityCriticalpatent/JPH0339917Y2/ja
Priority to US07/138,487prioritypatent/US4899086A/en
Publication of JPS63108199UpublicationCriticalpatent/JPS63108199U/ja
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Publication of JPH0339917Y2publicationCriticalpatent/JPH0339917Y2/ja