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
CA659852A
Inventor
Eckardt Friedrich
Hausmann Ewald
Heinze Hans-Olaf
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.)
Huettenwerk Oberhausen AG
Original Assignee
Huettenwerk Oberhausen AG
Publication date
Application grantedgrantedCritical
Publication of CA659852ApublicationCriticalpatent/CA659852A/en