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
CA781554A
Inventor
Unseld Werner
Morlock Gerhard
Landsfeld Hans
Bader Erich
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.)
Evonik Operations GmbH
Original Assignee
Erich Bader
Gerhard Morlock
Hans Landsfeld
Werner Unseld
Deutsche Gold und Silber Scheideanstalt
Publication date
Application grantedgrantedCritical
Publication of CA781554ApublicationCriticalpatent/CA781554A/en