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Priority to JP5573989UpriorityCriticalpatent/JPH02147412U/ja
Priority to DE1990606095prioritypatent/DE69006095T2/de
Priority to EP19900305258prioritypatent/EP0398673B1/en
Priority to CA 2016891prioritypatent/CA2016891C/en
Publication of JPH02147412UpublicationCriticalpatent/JPH02147412U/ja