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Priority to JP13354287UpriorityCriticalpatent/JPS6438215U/ja
Priority to US07/236,755prioritypatent/US4909678A/en
Priority to EP88307998Aprioritypatent/EP0306255B1/en
Priority to DE3855272Tprioritypatent/DE3855272T2/de
Publication of JPS6438215UpublicationCriticalpatent/JPS6438215U/ja