Doug N. Derr

HS Halliburton Energy Services: 1 patents #338 of 775Top 45%

📍 Houston, TX: #738 of 2,453 inventorsTop 35%

🗺 Texas: #5,225 of 15,389 inventorsTop 35%

Overall (2017): #438,153 of 506,227Top 90%

Patents 2017

Issued Patents 2017

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
9534488	Electromagnetic ranging source suitable for use in a drill string	Andrew John Cuthbert, Joe E. Hess	2017-01-03