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.)
Daido Steel Co Ltd
Original Assignee
Daido Steel 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 Daido Steel Co LtdfiledCriticalDaido Steel Co Ltd
Priority to JP6110475ApriorityCriticalpatent/JPS51137610A/en
Publication of JPS51137610ApublicationCriticalpatent/JPS51137610A/en