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
CA807778A
Inventor
A. N. Bjork Nils
Borg Sven-Bertil
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.)
AGA AB
Original Assignee
AGA AB
Publication date
Application grantedgrantedCritical
Publication of CA807778ApublicationCriticalpatent/CA807778A/en