Sandnes
Norway
4
2019-10-03
The entities that hold a legal rights for patent applications filed by inventor Rorvik Helge:
Helge Rorvik from Sandnes, NO has applied for patents for these inventions. The list has both pending applications and granted patents:
Single-trip wellbore liner drilling system
#2 | 2018-12-27Non-rotating drill-in packer
#3 | 2018-02-15Packoff pressure prevention systems and methods
#4 | 2016-08-04BALL DROP TOOL AND METHODS OF USE
1610958 ⎘