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 JP15915079Aexternal-prioritypatent/JPS5682535A/en
Application filed by Hitachi LtdfiledCriticalHitachi Ltd
Publication of MX5235EpublicationCriticalpatent/MX5235E/en