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Priority to JP3316489UpriorityCriticalpatent/JPH02125469U/ja
Priority to US07/497,401prioritypatent/US5155625A/en
Priority to DE90105603Tprioritypatent/DE69002495T2/de
Priority to EP90105603Aprioritypatent/EP0388988B1/en
Publication of JPH02125469UpublicationCriticalpatent/JPH02125469U/ja