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
CA782949A
Inventor
Sohnchen Ernst
F. Von Gruenberg 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.)
Bergische Stahl Industrie
Original Assignee
Bergische Stahl Industrie
Publication date
Application grantedgrantedCritical
Publication of CA782949ApublicationCriticalpatent/CA782949A/en