HK

Hans O. Knagenhjelm

NA Norsk Hydro Asa: 1 patents #182 of 584Top 35%
📍 Porsgrunn, NO: #93 of 184 inventorsTop 55%
Overall (All Time): #3,898,047 of 4,157,543Top 95%
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Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4908491 Integrated modular tool system for end preparation and end-to-end welding of pipes 1990-03-13