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 JP11491378UpriorityCriticalpatent/JPS5756639Y2/ja
Priority to GB7927907Aprioritypatent/GB2029161B/en
Priority to US06/066,722prioritypatent/US4268725A/en
Priority to DE19792933286prioritypatent/DE2933286A1/de
Publication of JPS5531374UpublicationCriticalpatent/JPS5531374U/ja
Application grantedgrantedCritical
Publication of JPS5756639Y2publicationCriticalpatent/JPS5756639Y2/ja