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
CA861424A
Inventor
F. Boyce Joseph
V. Bernstein Axel
H. O. Carlen Jan-Christer
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.)
Sandvik AB
Original Assignee
Sandvik AB
Publication date
Application grantedgrantedCritical
Publication of CA861424ApublicationCriticalpatent/CA861424A/en