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Priority to JP1986062886UpriorityCriticalpatent/JPH0532396Y2/ja
Priority to US07/021,838prioritypatent/US4793293A/en
Publication of JPS62173290UpublicationCriticalpatent/JPS62173290U/ja
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Publication of JPH0532396Y2publicationCriticalpatent/JPH0532396Y2/ja