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.)
TDK Corp
Original Assignee
TDK 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 TDK CorpfiledCriticalTDK Corp
Priority to JP8064878ApriorityCriticalpatent/JPS557573A/en
Priority to US06/027,833prioritypatent/US4216102A/en
Priority to GB7912187Aprioritypatent/GB2018237B/en
Priority to DE19792914130prioritypatent/DE2914130A1/en
Publication of JPS557573ApublicationCriticalpatent/JPS557573A/en