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.)
Nippon Steel Corp
Kawanoe Zoki Co Ltd
Original Assignee
Sumitomo Metal Industries Ltd
Kawanoe Zoki 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 Sumitomo Metal Industries Ltd, Kawanoe Zoki Co LtdfiledCriticalSumitomo Metal Industries Ltd
Priority to JP5809087ApriorityCriticalpatent/JPS63232114A/ja
Publication of JPS63232114ApublicationCriticalpatent/JPS63232114A/ja
Publication of JPH0563370B2publicationCriticalpatent/JPH0563370B2/ja