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Per Risvik Syversen

📍 Fredrikstad, NO: #36 of 80 inventorsTop 45%
Overall (All Time): #3,073,597 of 4,157,543Top 75%
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Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
9151394 Valve system with a sealing member — 2015-10-06