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John Helvik

TSTdw Offshore Services Sa: 1 patents #3 of 4Top 75%
Overall (2011): #261,720 of 364,097Top 75%
1 Patents 2011

Issued Patents 2011

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
8042574 Plug with expandable packer element Jone Mellemstrand 2011-10-25

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