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Priority to JP8926190UpriorityCriticalpatent/JPH0447937U/ja
Priority to US07/750,568prioritypatent/US5239892A/en
Priority to DE4128276Aprioritypatent/DE4128276A1/de
Priority to GB9118328Aprioritypatent/GB2248893B/en
Publication of JPH0447937UpublicationCriticalpatent/JPH0447937U/ja