DM

Dan W. Marshall

📍 Bakersfield, CA: #240 of 840 inventorsTop 30%
🗺 California: #185,134 of 386,348 inventorsTop 50%
Overall (All Time): #1,923,912 of 4,157,543Top 50%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
10852288 Oil well gauging system and method of using the same Suzanne Griston Castrup 2020-12-01
9334728 Oil well production analyzing system 2016-05-10