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Priority to JP12031089UpriorityCriticalpatent/JPH0374440U/ja
Priority to AT90119696Tprioritypatent/ATE118101T1/de
Priority to DE69016560Tprioritypatent/DE69016560T2/de
Priority to EP90119696Aprioritypatent/EP0422685B1/en
Publication of JPH0374440UpublicationCriticalpatent/JPH0374440U/ja