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.)
Expired
Application number
CA848957A
Inventor
Hada Takashi
Doi Kazuyuki
Yanabu Osamu
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.)
Fuji Iron and Steel Co Ltd
Original Assignee
Fuji Iron and Steel Co Ltd
Publication date
Application grantedgrantedCritical
Publication of CA848957ApublicationCriticalpatent/CA848957A/en