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Priority to JP12195688UpriorityCriticalpatent/JPH0258201U/ja
Priority to US07/291,202prioritypatent/US4916528A/en
Priority to DE3888153Tprioritypatent/DE3888153T2/de
Priority to EP88312346Aprioritypatent/EP0323214B1/en
Publication of JPH0258201UpublicationCriticalpatent/JPH0258201U/ja