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
CA778497A
Inventor
Hauser Hans
Langhans Jurgen
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 AG
Original Assignee
Escher Wyss AG
Publication date
Application grantedgrantedCritical
Publication of CA778497ApublicationCriticalpatent/CA778497A/en