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Priority to JP12933387UpriorityCriticalpatent/JPS6434697U/ja
Priority to DE8888107840Tprioritypatent/DE3876493T2/de
Priority to EP88107840Aprioritypatent/EP0291914B1/en
Priority to US07/194,872prioritypatent/US4873905A/en
Publication of JPS6434697UpublicationCriticalpatent/JPS6434697U/ja