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
CA855801A
Inventor
Matsumoto Jiro
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.)
Tohoku Special Steel Works Ltd
Original Assignee
Tohoku Special Steel Works Ltd
Publication date
Application grantedgrantedCritical
Publication of CA855801ApublicationCriticalpatent/CA855801A/en