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Priority to JP6513489UpriorityCriticalpatent/JPH037648U/ja
Priority to US07/531,274prioritypatent/US5028826A/en
Priority to EP90305989Aprioritypatent/EP0401034B1/en
Priority to DE69005530Tprioritypatent/DE69005530T2/de
Publication of JPH037648UpublicationCriticalpatent/JPH037648U/ja