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
CA714345A
Inventor
Classen Hans-Heinrich
Acker Josef
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.)
Rokal GmbH
Original Assignee
Rokal GmbH
Publication date
Application grantedgrantedCritical
Publication of CA714345ApublicationCriticalpatent/CA714345A/en