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
CA744158A
Inventor
L. Lindh Thorsten
O. S. Stark Sven
G. Swede Harald
M. R. Wettlen Lars
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
Harald G Swede
Lars M R Wettlen
Sven O S Stark
Thorsten L Lindh
TETRA AB
Publication date
Application grantedgrantedCritical
Publication of CA744158ApublicationCriticalpatent/CA744158A/en