RJ

Ralph William Graeme Johns

DU Dreco Energy Services Ulc: 1 patents #1 of 9Top 15%
📍 Edmonton, CA: #73 of 274 inventorsTop 30%
Overall (2017): #273,707 of 506,227Top 55%
1
Patents 2017

Issued Patents 2017

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
9822587 Method and apparatus for controlling downhole rotational rate of a drilling tool Jonathan Ryan Prill, Nicholas Ryan Marchand 2017-11-21