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
CA684907A
Inventor
Rosenfeld Klaus
Mickley Gunter
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.)
Sulzer Escher Wyss GmbH
Original Assignee
Escher Wyss GmbH
Publication date
Application grantedgrantedCritical
Publication of CA684907ApublicationCriticalpatent/CA684907A/en