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Priority to JP5478289UpriorityCriticalpatent/JPH02146360U/ja
Priority to US07/517,937prioritypatent/US5065625A/en
Priority to EP90420214Aprioritypatent/EP0397584B1/en
Priority to DE69023388Tprioritypatent/DE69023388T2/de
Publication of JPH02146360UpublicationCriticalpatent/JPH02146360U/ja
