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Priority to JP1990062318UpriorityCriticalpatent/JPH0617892Y2/ja
Publication of JPH0358370UpublicationCriticalpatent/JPH0358370U/ja
Priority to GB9112717Aprioritypatent/GB2245288B/en
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Publication of JPH0617892Y2publicationCriticalpatent/JPH0617892Y2/ja