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Priority to JP3168590UpriorityCriticalpatent/JPH03124791U/ja
Priority to KR1019910003826Aprioritypatent/KR920005775A/ko
Priority to US07/667,691prioritypatent/US5237237A/en
Priority to EP91302040Aprioritypatent/EP0447172B1/en
Priority to DE69119807Tprioritypatent/DE69119807T2/de
Publication of JPH03124791UpublicationCriticalpatent/JPH03124791U/ja