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 JP1974104313UpriorityCriticalpatent/JPS5520881Y2/ja
Publication of JPS5131428UpublicationCriticalpatent/JPS5131428U/ja
Application grantedgrantedCritical
Publication of JPS5520881Y2publicationCriticalpatent/JPS5520881Y2/ja