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.)
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filedfiledCritical
Priority to JP1988094078UpriorityCriticalpatent/JPH0216986U/ja
Priority to KR1019890009898Aprioritypatent/KR970001913B1/ko
Publication of JPH0216986UpublicationCriticalpatent/JPH0216986U/ja
Priority to US07/544,065prioritypatent/US5033803A/en
Priority to US07/729,874prioritypatent/US5191736A/en
