GS

Gregson William Martin Spring

📍 Worcester, GB: #43 of 288 inventorsTop 15%
Overall (All Time): #1,251,514 of 4,157,543Top 35%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
7378985 Communication system for down hole use — 2008-05-27
7141901 Downhole torque-generating and generator combination apparatus — 2006-11-28
7057316 Downhole torque generator — 2006-06-06
5230035 Motor speed controller — 1993-07-20