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
CA813647A
Inventor
Wallberg Arne
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.)
INDUSTRILABORATORIET AB
Original Assignee
INDUSTRILABORATORIET AB
Publication date
Application grantedgrantedCritical
Publication of CA813647ApublicationCriticalpatent/CA813647A/en