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 JP60181452Aexternal-prioritypatent/JPS6240885A/ja
Priority claimed from JP60270530Aexternal-prioritypatent/JPS62130096A/ja
Application filed by Sony CorpfiledCriticalSony Corp
Priority claimed from EP86111373Aexternal-prioritypatent/EP0217091B1/de
Application grantedgrantedCritical
Publication of ATE70683T1publicationCriticalpatent/ATE70683T1/de