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 JP1987139214UpriorityCriticalpatent/JPH0432909Y2/ja
Priority to KR1019880003634Aprioritypatent/KR880012143A/ko
Priority to US07/179,289prioritypatent/US4890448A/en
Priority to DE3812272Aprioritypatent/DE3812272A1/de
Publication of JPS6443628UpublicationCriticalpatent/JPS6443628U/ja
Priority to US07/456,489prioritypatent/US4999985A/en
Priority to KR2019910017369Uprioritypatent/KR920000772Y1/ko
Application grantedgrantedCritical
Publication of JPH0432909Y2publicationCriticalpatent/JPH0432909Y2/ja
