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 JP6978981UpriorityCriticalpatent/JPS641792Y2/ja
Publication of JPS57181135UpublicationCriticalpatent/JPS57181135U/ja
Application grantedgrantedCritical
Publication of JPS641792Y2publicationCriticalpatent/JPS641792Y2/ja