Calgary
Canada
4
2011-05-19
The entities that hold a legal rights for patent applications filed by inventor Nott Darcy:
Darcy Nott from Calgary, CA has applied for patents for these inventions. The list has both pending applications and granted patents:
Annulus pressure control drilling systems and methods
#2 | 2008-03-13Annulus pressure control drilling systems and methods
#3 | 2006-01-12Methods and apparatus for drilling with a multiphase pump
#4 | 2005-11-22Methods and apparatus for drilling with a multiphase pump
3383800 ⎘