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Priority to JP16600588UpriorityCriticalpatent/JPH0285675U/ja
Priority to US07/451,804prioritypatent/US5018594A/en
Priority to GB8928509Aprioritypatent/GB2228460B/en
Priority to DE3942494Aprioritypatent/DE3942494A1/de
Publication of JPH0285675UpublicationCriticalpatent/JPH0285675U/ja