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 JP7977481UpriorityCriticalpatent/JPS592124Y2/ja
Priority to DE8181304172Tprioritypatent/DE3168501D1/de
Priority to EP19810304172prioritypatent/EP0048576B1/en
Publication of JPS57192964UpublicationCriticalpatent/JPS57192964U/ja
Application grantedgrantedCritical
Publication of JPS592124Y2publicationCriticalpatent/JPS592124Y2/ja
