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
CA729417A
Inventor
O. A. Johannisson Dag
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 CA729417ApublicationCriticalpatent/CA729417A/en