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
Priority claimed from JP3870873Aexternal-prioritypatent/JPS5346438B2/ja
Priority claimed from JP48071715Aexternal-prioritypatent/JPS6022507B2/ja
Application filedfiledCritical
Publication of NL7404581ApublicationCriticalpatent/NL7404581A/xx