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Priority to JP3611888UpriorityCriticalpatent/JPH01140113U/ja
Priority to US07/324,234prioritypatent/US4996657A/en
Priority to GB8906128Aprioritypatent/GB2217005B/en
Priority to DE3908854Aprioritypatent/DE3908854A1/de
Publication of JPH01140113UpublicationCriticalpatent/JPH01140113U/ja
