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 JP48001540ApriorityCriticalpatent/JPS4991208A/ja
Publication of JPS4991208ApublicationCriticalpatent/JPS4991208A/ja
Priority to US05/588,769prioritypatent/US4015289A/en