JH

John Helvik

TS Tdw Offshore Services Sa: 1 patents #3 of 5Top 60%
Overall (All Time): #2,015,999 of 4,157,543Top 50%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
9470054 Petroleum well intervention winch system Morten Talgø 2016-10-18
8042574 Plug with expandable packer element Jone Mellemstrand 2011-10-25