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Priority to JP11490088UpriorityCriticalpatent/JPH0237567U/ja
Priority to US07/389,776prioritypatent/US5003208A/en
Priority to GB8919273Aprioritypatent/GB2223363B/en
Priority to DE3928630Aprioritypatent/DE3928630A1/de
Priority to CN89106954Aprioritypatent/CN1024732C/zh
Publication of JPH0237567UpublicationCriticalpatent/JPH0237567U/ja
