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
CA886636A
Inventor
Persicke Gunter
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.)
Christiani and Nielsen Ltd
Original Assignee
Christiani and Nielsen Ltd
Publication date
Application grantedgrantedCritical
Publication of CA886636ApublicationCriticalpatent/CA886636A/en