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Priority to JP7109285UpriorityCriticalpatent/JPS61187456U/ja
Priority to US06/861,910prioritypatent/US4751686A/en
Priority to GB08611732Aprioritypatent/GB2175395B/en
Priority to DE19863616127prioritypatent/DE3616127A1/de
Publication of JPS61187456UpublicationCriticalpatent/JPS61187456U/ja