Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Priority to JP15056087UpriorityCriticalpatent/JPS6457567U/ja
Priority to KR1019880012771Aprioritypatent/KR890007199A/ko
Priority to EP88309192Aprioritypatent/EP0310452A3/en
Publication of JPS6457567UpublicationCriticalpatent/JPS6457567U/ja
Priority to US07/552,844prioritypatent/US5112275A/en
