JM

Jan Edgar Marshall

ND National Oilwell Dht: 1 patents #4 of 19Top 25%
📍 Conroe, TX: #48 of 116 inventorsTop 45%
🗺 Texas: #5,225 of 15,389 inventorsTop 35%
Overall (2017): #386,731 of 506,227Top 80%
1
Patents 2017

Issued Patents 2017

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
9631435 Matrix fixed cutter drill bits and methods for manufacturing same Michael A. Garner, Harold A. Sreshta 2017-04-25