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
CA706976A
Inventor
Hell Rudolf
Zeyen Fritz-Otto
Hennig Eberhard
Keller Hans
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.)
Dr Ing Rudolf Hell GmbH
Original Assignee
Dr Ing Rudolf Hell GmbH
Publication date
Application grantedgrantedCritical
Publication of CA706976ApublicationCriticalpatent/CA706976A/en