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 JP1980098372UpriorityCriticalpatent/JPS6243640Y2/ja
Priority to US06/191,422prioritypatent/US4411303A/en
Publication of JPS5721452UpublicationCriticalpatent/JPS5721452U/ja
Application grantedgrantedCritical
Publication of JPS6243640Y2publicationCriticalpatent/JPS6243640Y2/ja