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Priority to JP1988131089UpriorityCriticalpatent/JPH0252248U/ja
Priority to KR1019890009904Aprioritypatent/KR920003958B1/ko
Priority to EP19890118496prioritypatent/EP0362843A3/en
Priority to US07/418,192prioritypatent/US5053735A/en
Publication of JPH0252248UpublicationCriticalpatent/JPH0252248U/ja