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 JP14976188UpriorityCriticalpatent/JPH0716996Y2/ja
Priority to KR1019890016581Aprioritypatent/KR920004533B1/ko
Priority to DE3938056Aprioritypatent/DE3938056C2/de
Publication of JPH0271257UpublicationCriticalpatent/JPH0271257U/ja
Priority to US07/815,582prioritypatent/US5271816A/en
Application grantedgrantedCritical
Publication of JPH0716996Y2publicationCriticalpatent/JPH0716996Y2/ja