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 JP12522686UpriorityCriticalpatent/JPS6331392U/ja
Priority to US07/081,324prioritypatent/US4891776A/en
Publication of JPS6331392UpublicationCriticalpatent/JPS6331392U/ja