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
CA695723A
Inventor
G. Swede Harald
Brunlid John-Erik
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.)
TETRA AB
Original Assignee
TETRA AB
Publication date
Application grantedgrantedCritical
Publication of CA695723ApublicationCriticalpatent/CA695723A/en