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Priority to JP1988126663UpriorityCriticalpatent/JPH0250071U/ja
Priority to DE3931256Aprioritypatent/DE3931256A1/de
Priority to KR1019890013412Aprioritypatent/KR930000475B1/ko
Priority to US07/410,569prioritypatent/US5014563A/en
Publication of JPH0250071UpublicationCriticalpatent/JPH0250071U/ja