Rolf Dirdal

DA Den Norske Stats Oljeselskap A.S.: 1 patents #59 of 220Top 30%

📍 Sola, NO: #61 of 127 inventorsTop 50%

Overall (All Time): #3,525,166 of 4,157,543Top 85%

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Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
6631763	Method and system for testing a borehole by the use of a movable plug	John Self	2003-10-14