JD

Jim L. Downen

📍 Bakersfield, CA: #162 of 840 inventorsTop 20%
🗺 California: #149,087 of 386,348 inventorsTop 40%
Overall (All Time): #1,685,577 of 4,157,543Top 45%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
4273520 Deep well pump Wayne N. Sutliff 1981-06-16
4261427 Long stroke jar bumper sub with safety sleeve Wayne N. Sutliff 1981-04-14
4186807 Optional up-blow, down-blow jar tool Wayne N. Sutliff 1980-02-05