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Ketil Ronning

AA Archer Oiltools As: 1 patents #8 of 15Top 55%
Overall (All Time): #2,035,717 of 4,157,543Top 50%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
9127776 Sleeve valve with permanent end position Arve Byberg 2015-09-08
8783649 Sleeve valve with permanent end position Arve Byberg 2014-07-22