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Priority to JP10530887UpriorityCriticalpatent/JPH0324164Y2/ja
Priority to EP88306136Aprioritypatent/EP0299667A1/en
Publication of JPS6412510UpublicationCriticalpatent/JPS6412510U/ja
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Publication of JPH0324164Y2publicationCriticalpatent/JPH0324164Y2/ja