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Priority to JP5161789UpriorityCriticalpatent/JPH02145494U/ja
Priority to US07/515,181prioritypatent/US5021677A/en
Priority to EP90108035Aprioritypatent/EP0399244B1/en
Priority to DE69016828Tprioritypatent/DE69016828T2/de
Publication of JPH02145494UpublicationCriticalpatent/JPH02145494U/ja