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 JP9858686UpriorityCriticalpatent/JPH0325947Y2/ja
Publication of JPS636820UpublicationCriticalpatent/JPS636820U/ja
Priority to US07/246,613prioritypatent/US4840553A/en
Application grantedgrantedCritical
Publication of JPH0325947Y2publicationCriticalpatent/JPH0325947Y2/ja
