P

Inventor

JOHNSTON DAVID H

US7 patents
⚠️ This page may combine multiple inventors who share the name “JOHNSTON DAVID H”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

EXXONMOBIL UPSTREAM RES CO

3 patents

JOHNSTON DAVID H

2 patents

POLY DISC SYSTEMS INC

2 patents