Inventor

ROBERTS PAUL DONALD

US3 patents

⚠️ This page may combine multiple inventors who share the name “ROBERTS PAUL DONALD”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

ROBERTS PAUL DONALD

2 patents

US9670731B2Jun 6, 2017

Adjustable bent housing for directional drill string

ROBERTS PAUL DONALD2 citations67

US4075453AFeb 21, 1978

Welding

ROBERTS PAUL DONALD13 citations65

LAGRANGE TIMOTHY EDWARD

1 patent

US10267366B2Apr 23, 2019

Universal joint for downhole motor drive

LAGRANGE TIMOTHY EDWARD4 citations67