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 JP3479781UpriorityCriticalpatent/JPS6231871Y2/ja
Priority to US06/357,324prioritypatent/US4468948A/en
Publication of JPS57147746UpublicationCriticalpatent/JPS57147746U/ja
Application grantedgrantedCritical
Publication of JPS6231871Y2publicationCriticalpatent/JPS6231871Y2/ja