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.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FDK Corp
Original Assignee
FDK Corp
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 filed by FDK CorpfiledCriticalFDK Corp
Priority to JP50004674ApriorityCriticalpatent/JPS5180930A/ja
Publication of JPS5180930ApublicationCriticalpatent/JPS5180930A/ja
Publication of JPS5417934B2publicationCriticalpatent/JPS5417934B2/ja