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 SE8405060Aexternal-prioritypatent/SE448119B/sv
Application filed by Stroemnes Mining Tunneling EqufiledCriticalStroemnes Mining Tunneling Equ
Application grantedgrantedCritical
Publication of ATE53253T1publicationCriticalpatent/ATE53253T1/de