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 JP1969080219Uexternal-prioritypatent/JPS4830463Y1/ja
Application filedfiledCritical
Publication of BE743205ApublicationCriticalpatent/BE743205A/xx