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 JP6011981UpriorityCriticalpatent/JPS621998Y2/ja
Publication of JPS57172801UpublicationCriticalpatent/JPS57172801U/ja
Application grantedgrantedCritical
Publication of JPS621998Y2publicationCriticalpatent/JPS621998Y2/ja