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Priority to JP8730089UpriorityCriticalpatent/JPH0326116U/ja
Priority to US07/556,910prioritypatent/US5194976A/en
Priority to DE69018721Tprioritypatent/DE69018721T3/de
Priority to EP90114173Aprioritypatent/EP0410387B2/en
Publication of JPH0326116UpublicationCriticalpatent/JPH0326116U/ja