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Priority to JP1987187670UpriorityCriticalpatent/JPH0324165Y2/ja
Priority to EP88306136Aprioritypatent/EP0299667A1/en
Publication of JPH0193007UpublicationCriticalpatent/JPH0193007U/ja
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Publication of JPH0324165Y2publicationCriticalpatent/JPH0324165Y2/ja