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 JP1987138754UpriorityCriticalpatent/JPH0516674Y2/ja
Priority to US07/153,338prioritypatent/US4868693A/en
Publication of JPS6445332UpublicationCriticalpatent/JPS6445332U/ja
Priority to US07/336,894prioritypatent/US4959739A/en
Application grantedgrantedCritical
Publication of JPH0516674Y2publicationCriticalpatent/JPH0516674Y2/ja