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
CA774663A
Inventor
Wolfes Wolfgang
Renckhoff Gustav
Hulsmann Hans-Leo
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.)
Chemische Werke Witten GmbH
Original Assignee
Chemische Werke Witten GmbH
Publication date
Application grantedgrantedCritical
Publication of CA774663ApublicationCriticalpatent/CA774663A/en