Sandnes
Norway
8
2014-10-30
The entities that hold a legal rights for patent applications filed by inventor Krohn Helge:
Helge Krohn from Sandnes, NO has applied for patents for these inventions. The list has both pending applications and granted patents:
Device and method for drilling with continuous tool rotation and continuous drilling fluid supply
#2 | 2013-08-01Device and method for drilling with continuous tool rotation and continuous drilling fluid supply
#3 | 2013-01-17Rotary table device for a pipe string
#4 | 2012-10-18Tool guide device for a drill floor
#5 | 2012-05-17Device for a downhole apparatus for machining of casings and also a method of depositing machined shavings
#6 | 2012-01-05Method for withdrawal and insertion of a drill pipe string in a borehole and also a device for use when practicing the method
#7 | 2011-04-28Method for Control of a Drilling Operation
#8 | 2008-10-09Separating device
35554 ⎘