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
CA687897A
Inventor
Jansson Ragnar
Lilja Lars-Edvin
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.)
Arenco AB
Original Assignee
Arenco AB
Publication date
Application grantedgrantedCritical
Publication of CA687897ApublicationCriticalpatent/CA687897A/en