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
CA915991A
Inventor
Hagemann Walter
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.)
Siemen and Hinsch GmbH
Original Assignee
Siemen and Hinsch GmbH
Publication date
Application grantedgrantedCritical
Publication of CA915991ApublicationCriticalpatent/CA915991A/en