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 JP15019887UpriorityCriticalpatent/JPH0719950Y2/ja
Priority to US07/231,808prioritypatent/US4877100A/en
Publication of JPS6452978UpublicationCriticalpatent/JPS6452978U/ja
Application grantedgrantedCritical
Publication of JPH0719950Y2publicationCriticalpatent/JPH0719950Y2/ja