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
Priority claimed from JP15149884Aexternal-prioritypatent/JPS6129472A/ja
Priority claimed from JP7109085Uexternal-prioritypatent/JPH0341343Y2/ja
Application filed by Sony CorpfiledCriticalSony Corp
Priority claimed from EP19850109071external-prioritypatent/EP0169514B1/de
Application grantedgrantedCritical
Publication of ATE62351T1publicationCriticalpatent/ATE62351T1/de