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 JP1972137880UpriorityCriticalpatent/JPS5640721Y2/ja
Publication of JPS4991071UpublicationCriticalpatent/JPS4991071U/ja
Application grantedgrantedCritical
Publication of JPS5640721Y2publicationCriticalpatent/JPS5640721Y2/ja