Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from SE8901218Aexternal-prioritypatent/SE8901218D0/en
Priority claimed from SE8901219Aexternal-prioritypatent/SE463483B/en
Application filed by Geotronics AbfiledCriticalGeotronics Ab
Priority claimed from PCT/SE1990/000232external-prioritypatent/WO1990012282A1/en
Application grantedgrantedCritical
Publication of ATE98369T1publicationCriticalpatent/ATE98369T1/en