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
CA862879A
Inventor
Ulli Hans
Mages Karl
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.)
Elektrodenfabrik Oerlikon Buehrle AG
Original Assignee
Elektrodenfabrik Oerlikon Buehrle AG
Publication date
Application grantedgrantedCritical
Publication of CA862879ApublicationCriticalpatent/CA862879A/en