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 JP11974370UpriorityCriticalpatent/JPS5517661Y1/ja
Priority to GB5455171Aprioritypatent/GB1339817A/en
Priority to DE19712159640prioritypatent/DE2159640C3/de
Priority to FR7143594Aprioritypatent/FR2117405A5/fr
Publication of JPS5517661Y1publicationCriticalpatent/JPS5517661Y1/ja