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Priority to JP12636588UpriorityCriticalpatent/JPH0224109U/ja
Priority to US07/381,284prioritypatent/US4989455A/en
Priority to GB8916564Aprioritypatent/GB2222862B/en
Priority to DE3924462Aprioritypatent/DE3924462C2/de
Publication of JPH0224109UpublicationCriticalpatent/JPH0224109U/ja