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Priority to JP1990073521UpriorityCriticalpatent/JPH0430860U/ja
Priority to US07/726,285prioritypatent/US5316239A/en
Priority to GB9114787Aprioritypatent/GB2246059B/en
Priority to KR1019910011682Aprioritypatent/KR950008069B1/ko
Priority to DE4122819Aprioritypatent/DE4122819C2/de
Publication of JPH0430860UpublicationCriticalpatent/JPH0430860U/ja