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.)
Toshiba Corp
Nippon Steel Corp
Original Assignee
Nippon Steel Corp
Tokyo Shibaura Electric Co Ltd
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 Nippon Steel Corp, Tokyo Shibaura Electric Co LtdfiledCriticalNippon Steel Corp
Priority to JP49122087ApriorityCriticalpatent/JPS607474B2/ja
Publication of JPS5148116ApublicationCriticalpatent/JPS5148116A/ja
Publication of JPS607474B2publicationCriticalpatent/JPS607474B2/ja