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
CA708523A
Inventor
Brotzmann 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.)
Dortmund Hoerder Huettenunion AG
Original Assignee
Dortmund Hoerder Huettenunion AG
Publication date
Application grantedgrantedCritical
Publication of CA708523ApublicationCriticalpatent/CA708523A/en