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
CA711530A
Inventor
Kappeler Otto
Regenhold Rolf
Sudrow Siegfried
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.)
Efka Werke Fritz Kiehn GmbH
Original Assignee
Efka Werke Fritz Kiehn GmbH
Publication date
Application grantedgrantedCritical
Publication of CA711530ApublicationCriticalpatent/CA711530A/en