John Helvik

City:

Stavanger

Country:

Norway

Published Applications:

Last publication date:

2018-07-26

Top Assignees for applications by John Helvik

The entities that hold a legal rights for patent applications filed by inventor Helvik John:

John Helvik from Stavanger, NO has applied for patents for these inventions. The list has both pending applications and granted patents:

Methods for Conducting a Subsea Well Intervention, and Related System, Assembly and Apparatus

Petroleum well intervention winch system

Plug with expandable packer element

InventorID:

810763 ⎘